{"title":"Hayward Universal H-Series Low NOx Heater Replacement Parts","description":"\u003cp\u003eInteractive exploded-view parts diagram for Hayward Universal H-Series Low NOx heaters (H150FD, H200FD, H250FD, H300FD, H350FD, H400FD, H500FD). Click any numbered part to see the part number, price and stock. Common replacements include the igniter, flame sensor, ignition control, water pressure switch, thermistor, headers and heat exchangers. Not sure which part you need? Call us or bring the old part into any of our stores and we'll match it.\u003c\/p\u003e","products":[{"product_id":"haywarduniversalhseriesnaturalgasheater250000btuslownoxw3h250fdnhppw3h250fdn","title":"Hayward Universal H-Series Natural Gas Heater 250,000 BTUs, Low NOx | W3H250FDN","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Natural Gas Heater 250,000 BTUs, Low NOx | W3H250FDN\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H250FDN Low NOx Pool Heater offers powerful heating performance with an output of 250,000 BTUs, making it an excellent choice for larger residential or commercial pools. Engineered for energy efficiency and exceptional durability, this natural gas heater is designed to meet the demands of pool professionals and homeowners seeking reliable and consistent water temperature control.\u003c\/p\u003e\n\u003cp\u003eFeaturing a robust cupro nickel heat exchanger, the W3H250FDN provides superior resistance to corrosion caused by salt water and chemically treated pools, ensuring long-lasting performance and reduced maintenance needs. Its energy-efficient design, combined with installation adaptability, makes it an ideal replacement or new installation option for various pool configurations.\u003c\/p\u003e\n\u003cp\u003eThe W3H250FDN also meets low NOx emission standards, helping maintain clean air quality while delivering powerful and consistent heating performance. Hayward’s commitment to innovation and quality ensures that this heater will keep your pool comfortable and inviting, season after season.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H250FDN\u003c\/li\u003e\n\u003cli\u003eNatural Gas Pool Heater delivering 250,000 BTUs\u003c\/li\u003e\n\u003cli\u003eEquipped with a durable cupro nickel heat exchanger for excellent corrosion resistance\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient design for cost-effective operation\u003c\/li\u003e\n\u003cli\u003eInstallation adaptable to various pool systems\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with clean air quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for larger residential or commercial pools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H250FDN\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576143020348,"sku":"W3H250FDN","price":3999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-natural-gas-heater-250000-btus-low-nox-w3h250fdn-hayward-602936.jpg?v=1750391781"},{"product_id":"haywarduniversalhseriesnaturalgasheater400000btuslownoxw3h400fdnhppw3h400fdn","title":"Hayward Universal H-Series Natural Gas Heater 400,000 BTUs, Low NOx | W3H400FDN","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Natural Gas Heater 400,000 BTUs, Low NOx | W3H400FDN\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H400FDN Low NOx Pool Heater delivers powerful performance with an impressive 400,000 BTUs, making it the perfect choice for large residential or commercial pools and spas. Engineered for energy efficiency and dependable operation, this natural gas heater is designed to meet the rigorous demands of pool professionals and pool owners who value robust heating capacity and durability.\u003c\/p\u003e\n\u003cp\u003eEquipped with a premium cupro nickel heat exchanger, the W3H400FDN provides exceptional resistance to corrosion from salt water and chemically treated pools, ensuring longer life and reliable heating performance. Its universal design makes it highly adaptable for new installations or as a replacement, with flexible plumbing and electrical connections to suit diverse system requirements.\u003c\/p\u003e\n\u003cp\u003eCompliant with low NOx emission standards, the W3H400FDN is an environmentally responsible solution that contributes to improved air quality. Hayward’s dedication to innovative engineering ensures this heater delivers fast, efficient, and consistent heating to keep your pool water at the perfect temperature throughout the swimming season.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H400FDN\u003c\/li\u003e\n\u003cli\u003eFuel Type: Natural Gas\u003c\/li\u003e\n\u003cli\u003eHeating Capacity: 400,000 BTUs\u003c\/li\u003e\n\u003cli\u003eHeat Exchanger: Cupro Nickel for superior corrosion resistance\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient design helps reduce operational costs\u003c\/li\u003e\n\u003cli\u003eElectrical Requirements: 120V \/ 240V\u003c\/li\u003e\n\u003cli\u003eAmperage: 5.5 amps\u003c\/li\u003e\n\u003cli\u003eMinimum Flow Rate: 20 gallons per minute\u003c\/li\u003e\n\u003cli\u003ePlumbing Connections: 2\" x 2-1\/2\" CPVC union fittings\u003c\/li\u003e\n\u003cli\u003ePatented header by-pass design for optimized hydraulic performance\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with clean air quality standards\u003c\/li\u003e\n\u003cli\u003eApplication: Suitable for large residential and commercial pools and spas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H400FDN\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576147411260,"sku":"W3H400FDN","price":5099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-natural-gas-heater-400000-btus-low-nox-w3h400fdn-hayward-228178.jpg?v=1750391598"},{"product_id":"haywardbezelkeypadassemblybluefdxlbkp1932hppfdxlbkp1932","title":"Hayward Bezel \u0026 Keypad Assembly, Blue | FDXLBKP1932","description":"\u003cdiv\u003e\n\u003ch2\u003eHayward Bezel \u0026amp; Keypad Assembly, Blue | FDXLBKP1932\u003c\/h2\u003e\n\u003cp\u003eThe Hayward Blue Bezel and Keypad Assembly with Door is a genuine replacement part designed specifically for Universal H-Series Low NOx Heaters. This component ensures continued performance and convenient control of your Hayward heater system.\u003c\/p\u003e\n\u003ch3\u003eProduct Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Replaces the original bezel and keypad assembly on compatible Hayward pool heaters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Constructed with high-quality materials for reliable performance and weather resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Designed for a precise fit with no modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatible With:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal H-Series Low NOx Models:\u003c\/li\u003e\n\u003cli\u003eH150FD\u003c\/li\u003e\n\u003cli\u003eH200FD\u003c\/li\u003e\n\u003cli\u003eH250FD\u003c\/li\u003e\n\u003cli\u003eH300FD\u003c\/li\u003e\n\u003cli\u003eH350FD\u003c\/li\u003e\n\u003cli\u003eH400FD\u003c\/li\u003e\n\u003cli\u003eH500FD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEnsure peak performance and extend the life of your heater with the Hayward FDXLBKP1932 Blue Bezel \u0026amp; Keypad Assembly. Refer to your heater’s manual to verify compatibility before installation.\u003c\/p\u003e\n\u003cp\u003eSKU: FDXLBKP1932\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576154947900,"sku":"FDXLBKP1932","price":144.94,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesfdheaternaturalgasvalvefdxlgsv0001hppfdxlgsv0001","title":"Hayward H-Series FD Heater Natural Gas Valve | FDXLGSV0001","description":"\u003cdiv\u003e\n\u003ch2\u003eHayward H-Series FD Heater Natural Gas Valve | FDXLGSV0001\u003c\/h2\u003e\n\u003cp\u003eThe Hayward FDXLGSV0001 Natural Gas Valve Kit is designed for use with Universal H-Series Low NOx pool and spa heaters. This genuine Hayward replacement part ensures optimal performance and safety when regulating gas flow to your heating unit. Built with durable materials, it supports the high-efficiency operation of Hayward's advanced heating systems.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Natural Gas Valve Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e ASME Heater, H150FD, H200FD, H250FD, H300FD, H350FD, H400FD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor Use With:\u003c\/strong\u003e Universal H-Series Low NOx Pool and Spa\/Hot Tub Heaters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e High-quality, durable components for long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Regulates gas flow for safe and efficient heater operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEnsure the continued performance and safety of your Hayward Universal H-Series heater with this reliable OEM natural gas valve replacement.\u003c\/p\u003e\n\u003cp\u003eSKU: FDXLGSV0001\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576155472188,"sku":"FDXLGSV0001","price":319.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-h-series-fd-heater-natural-gas-valve-fdxlgsv0001-hayward-992224.jpg?v=1750391434"},{"product_id":"haywarduniversalhseriesnaturalgasheater150000btuslownoxw3h150fdnhppw3h150fdn","title":"Hayward Universal H-Series Natural Gas Heater 150,000 BTUs, Low NOx | W3H150FDN","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Natural Gas Heater 150,000 BTUs, Low NOx | W3H150FDN\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H150FDN Natural Gas Heater delivers 150,000 BTUs of reliable heating power, making it an excellent choice for both residential and commercial pool applications. Engineered for energy efficiency and high performance, this heater is designed with the pool service professional in mind, offering adaptability for a variety of installation requirements.\u003c\/p\u003e\n\u003cp\u003eBuilt with a standard cupronickel heat exchanger, the W3H150FDN provides superior resistance to salt water and harsh chemicals, ensuring durability and longer equipment life. The exclusive “Totally Managed” water flow through the cupronickel heat exchanger guarantees uniform water velocity across all tubes, resulting in faster and more efficient heating performance.\u003c\/p\u003e\n\u003cp\u003eFeaturing Hayward’s patented header by-pass design, this heater can help save up to 18% on energy costs by reducing pump run-time. The unit includes 2\" x 2-1\/2\" CPVC union plumbing connections and a common union that makes installation and servicing more convenient, while also allowing adaptation to larger plumbing for optimal efficiency. Additionally, the W3H150FDN boasts low NOx emissions, meeting stringent clean air quality standards.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H150FDN\u003c\/li\u003e\n\u003cli\u003eNatural Gas Heater with 150,000 BTUs output\u003c\/li\u003e\n\u003cli\u003eStandard cupronickel heat exchanger for excellent corrosion resistance\u003c\/li\u003e\n\u003cli\u003eExclusive “Totally Managed” water flow design for even heat transfer\u003c\/li\u003e\n\u003cli\u003ePatented header by-pass design enhances efficiency and energy savings\u003c\/li\u003e\n\u003cli\u003eUp to 18% energy savings by reducing pump run-time\u003c\/li\u003e\n\u003cli\u003e2\" x 2-1\/2\" CPVC union plumbing connections for easy installation\u003c\/li\u003e\n\u003cli\u003eAdaptable to larger plumbing for improved system performance\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with clean air standards\u003c\/li\u003e\n\u003cli\u003eElectrical requirements: 120\/240V\u003c\/li\u003e\n\u003cli\u003eAmperage: 5.5 amps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H150FDN\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576156356924,"sku":"W3H150FDN","price":2999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-natural-gas-heater-150000-btus-low-nox-w3h150fdn-hayward-135589.jpg?v=1750391398"},{"product_id":"haywarduniversalhseriespropanegasheater150000btuslownoxw3h150fdphppw3h150fdp","title":"Hayward Universal H-Series Propane Gas Heater 150,000 BTUs, Low NOx | W3H150FDP","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Propane Gas Heater 150,000 BTUs, Low NOx | W3H150FDP\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H150FDP Liquid Propane Gas Heater delivers 150,000 BTUs of dependable heating performance, making it an excellent choice for residential pools and spas. Designed with energy efficiency and durability in mind, this heater is built to meet the needs of pool professionals and homeowners who demand reliable and adaptable pool heating solutions.\u003c\/p\u003e\n\u003cp\u003eFeaturing a standard cupro nickel heat exchanger, the W3H150FDP offers superior resistance to salt water and harsh chemical environments, ensuring long-lasting performance and reduced maintenance. Hayward’s exclusive “Totally Managed” water flow system maintains the same velocity through all heat exchanger tubes, delivering faster and more efficient heating for your pool or spa.\u003c\/p\u003e\n\u003cp\u003eThe patented header by-pass design optimizes hydraulic performance and can save up to 18% on energy costs by reducing pump run-time. The heater is equipped with 2\" x 2-1\/2\" CPVC union plumbing connections for straightforward installation and service, while the common union design adapts easily to larger plumbing systems for improved efficiency. Additionally, the W3H150FDP meets low NOx emission standards, making it an environmentally responsible choice that complies with clean air regulations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H150FDP\u003c\/li\u003e\n\u003cli\u003eFuel Type: Liquid Propane Gas\u003c\/li\u003e\n\u003cli\u003eHeating Capacity: 150,000 BTUs\u003c\/li\u003e\n\u003cli\u003eHeat Exchanger: Standard cupro nickel for superior corrosion resistance\u003c\/li\u003e\n\u003cli\u003eExclusive “Totally Managed” water flow for uniform heat transfer\u003c\/li\u003e\n\u003cli\u003ePatented header by-pass design for energy efficiency and reduced pump run-time\u003c\/li\u003e\n\u003cli\u003eEnergy Savings: Up to 18% by reducing pump operation\u003c\/li\u003e\n\u003cli\u003eElectrical Requirements: 120V \/ 240V\u003c\/li\u003e\n\u003cli\u003eAmperage: 5.5 amps\u003c\/li\u003e\n\u003cli\u003eMinimum Flow Rate: 20 gallons per minute\u003c\/li\u003e\n\u003cli\u003ePlumbing Connections: 2\" x 2-1\/2\" CPVC union fittings\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with strict clean air quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for residential pools and spas seeking efficient and reliable heating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H150FDP\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576158978364,"sku":"W3H150FDP","price":2999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-propane-gas-heater-150000-btus-low-nox-w3h150fdp-hayward-417347.jpg?v=1750391390"},{"product_id":"haywarduniversalhseriesnaturalgasheater200000btuslownoxw3h200fdnhppw3h200fdn","title":"Hayward Universal H-Series Natural Gas Heater 200,000 BTUs, Low NOx | W3H200FDN","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Natural Gas Heater 200,000 BTUs, Low NOx | W3H200FDN\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H200FDN Natural Gas Heater is a high-performance heating solution designed to deliver exceptional efficiency and adaptability for pool professionals and homeowners alike. With a powerful 200,000 BTUs of heating capacity, this unit ensures rapid and consistent water temperature control for pools of varying sizes.\u003c\/p\u003e\n\u003cp\u003eEngineered for energy efficiency and versatile installation, the W3H200FDN operates on natural gas and offers compatibility with both 120V and 240V electrical systems. Its robust design makes it suitable for new installations or as a replacement heater, providing reliable performance season after season.\u003c\/p\u003e\n\u003cp\u003eThe W3H200FDN meets low NOx emission standards, making it an environmentally conscious choice that complies with stringent air quality regulations. With a minimum flow rate of 20 gallons per minute, this heater integrates seamlessly into most pool systems, ensuring efficient water circulation and optimal heating performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H200FDN\u003c\/li\u003e\n\u003cli\u003eNatural Gas Heater delivering 200,000 BTUs\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient, high-performance design\u003c\/li\u003e\n\u003cli\u003eInstallation adaptable for various pool configurations\u003c\/li\u003e\n\u003cli\u003eCompatible with 120V or 240V electrical connections\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions meet clean air quality standards\u003c\/li\u003e\n\u003cli\u003eMinimum flow rate requirement: 20 gallons per minute\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H200FDN\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576159207740,"sku":"W3H200FDN","price":3699.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-natural-gas-heater-200000-btus-low-nox-w3h200fdn-hayward-346558.jpg?v=1750391390"},{"product_id":"haywarduniversalhseriespropanegasheater200000btuslownoxw3h200fdphppw3h200fdp","title":"Hayward Universal H-Series Propane Gas Heater 200,000 BTUs, Low NOx | W3H200FDP","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Propane Gas Heater 200,000 BTUs, Low NOx | W3H200FDP\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H200FDP Liquid Propane Gas Heater is designed to deliver high-performance pool and spa heating with 200,000 BTUs of powerful output. Perfect for residential pools and spas, this heater offers exceptional energy efficiency, robust durability, and versatile installation options to meet the needs of pool professionals and discerning homeowners alike.\u003c\/p\u003e\n\u003cp\u003eEngineered for demanding environments, the W3H200FDP incorporates a durable cupro nickel heat exchanger, which provides excellent resistance against salt water and chemically treated pool conditions, ensuring long-lasting performance. Its universal design makes it highly adaptable for new installations or as a replacement heater, delivering reliable heating season after season.\u003c\/p\u003e\n\u003cp\u003eThe patented header by-pass design optimizes hydraulic performance, helping reduce pump run-time by up to 18% for significant energy savings. The heater is equipped with 2\" x 2-1\/2\" CPVC union plumbing connections, facilitating easy installation and maintenance while accommodating larger plumbing systems for enhanced efficiency. Additionally, the W3H200FDP meets low NOx emission standards, making it a responsible choice for maintaining cleaner air quality.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H200FDP\u003c\/li\u003e\n\u003cli\u003eFuel Type: Liquid Propane Gas\u003c\/li\u003e\n\u003cli\u003eHeating Capacity: 200,000 BTUs\u003c\/li\u003e\n\u003cli\u003eHeat Exchanger: Cupro nickel for superior corrosion resistance\u003c\/li\u003e\n\u003cli\u003eEnergy-efficient design for cost-effective operation\u003c\/li\u003e\n\u003cli\u003eExclusive “Totally Managed” water flow ensures uniform heating performance\u003c\/li\u003e\n\u003cli\u003ePatented header by-pass design enhances efficiency and reduces pump run-time\u003c\/li\u003e\n\u003cli\u003eEnergy Savings: Up to 18% by lowering pump operation time\u003c\/li\u003e\n\u003cli\u003eElectrical Requirements: 120V \/ 240V\u003c\/li\u003e\n\u003cli\u003eAmperage: 5.5 amps\u003c\/li\u003e\n\u003cli\u003eMinimum Flow Rate: 20 gallons per minute\u003c\/li\u003e\n\u003cli\u003ePlumbing Connections: 2\" x 2-1\/2\" CPVC union fittings\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with clean air quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for residential pool and spa applications requiring reliable, powerful heating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H200FDP\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576159240508,"sku":"W3H200FDP","price":3699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-propane-gas-heater-200000-btus-low-nox-w3h200fdp-hayward-175390.jpg?v=1750391390"},{"product_id":"haywarduniversalhseriespropanegasheater250000btuslownoxw3h250fdphppw3h250fdp","title":"Hayward Universal H-Series Propane Gas Heater 250,000 BTUs, Low NOx | W3H250FDP","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Propane Gas Heater 250,000 BTUs, Low NOx | W3H250FDP\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H250FDP Liquid Propane Gas Heater is a powerful and efficient heating solution, delivering 250,000 BTUs to keep residential or commercial pools and spas at the perfect temperature. Engineered for exceptional energy efficiency and high performance, this heater is a trusted choice for pool professionals and homeowners who demand reliable heating and versatile installation options.\u003c\/p\u003e\n\u003cp\u003eBuilt with a durable cupro nickel heat exchanger, the W3H250FDP offers excellent resistance to corrosion from salt water and chemically treated pools, ensuring long-lasting operation and reduced maintenance. The exclusive “Totally Managed” water flow design maintains consistent water velocity through all heat exchanger tubes, promoting faster and more even heating performance.\u003c\/p\u003e\n\u003cp\u003eHayward’s patented header by-pass design optimizes hydraulic efficiency, enabling up to 18% energy savings by reducing pump run-time. The heater includes 2\" x 2-1\/2\" CPVC union plumbing connections, making installation and servicing simple and flexible. Additionally, the W3H250FDP meets low NOx emission standards, making it an environmentally conscious choice for pool heating.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H250FDP\u003c\/li\u003e\n\u003cli\u003eFuel Type: Liquid Propane Gas\u003c\/li\u003e\n\u003cli\u003eHeating Capacity: 250,000 BTUs\u003c\/li\u003e\n\u003cli\u003eHeat Exchanger: Cupro nickel for superior corrosion resistance\u003c\/li\u003e\n\u003cli\u003eExclusive “Totally Managed” water flow ensures uniform heating\u003c\/li\u003e\n\u003cli\u003ePatented header by-pass design improves efficiency and lowers pump run-time\u003c\/li\u003e\n\u003cli\u003eEnergy Savings: Up to 18% by reducing pump operation time\u003c\/li\u003e\n\u003cli\u003eElectrical Requirements: 120V \/ 240V\u003c\/li\u003e\n\u003cli\u003eAmperage: 5.5 amps\u003c\/li\u003e\n\u003cli\u003eMinimum Flow Rate: 20 gallons per minute\u003c\/li\u003e\n\u003cli\u003ePlumbing Connections: 2\" x 2-1\/2\" CPVC union fittings\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with clean air quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for medium to large residential or commercial pools and spas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H250FDP\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576159273276,"sku":"W3H250FDP","price":3999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-propane-gas-heater-250000-btus-low-nox-w3h250fdp-hayward-547793.jpg?v=1750391389"},{"product_id":"haywarduniversalhseriespropanegasheater400000btuslownoxw3h400fdphppw3h400fdp","title":"Hayward Universal H-Series Propane Gas Heater 400,000 BTUs, Low NOx | W3H400FDP","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward Universal H-Series Propane Gas Heater 400,000 BTUs, Low NOx | W3H400FDP\u003c\/h1\u003e\n\u003cp\u003eThe Hayward Universal H-Series W3H400FDP Liquid Propane Gas Heater is the ultimate heating solution for large residential and commercial pools and spas, delivering an impressive 400,000 BTUs of powerful, reliable performance. Designed for exceptional energy efficiency and high performance, this heater meets the demands of pool professionals and homeowners who require robust, dependable heating for expansive aquatic spaces.\u003c\/p\u003e\n\u003cp\u003eEquipped with a rugged cupro nickel heat exchanger, the W3H400FDP offers outstanding resistance to corrosion caused by salt water and harsh pool chemicals, ensuring a longer operational life and minimal maintenance requirements. Hayward’s exclusive “Totally Managed” water flow technology guarantees uniform water velocity through all heat exchanger tubes, promoting faster and more efficient heating for your pool or spa.\u003c\/p\u003e\n\u003cp\u003eThe patented header by-pass design further optimizes hydraulic performance, delivering up to 18% energy savings by reducing pump run-time. Installation and service are streamlined thanks to 2\" x 2-1\/2\" CPVC union plumbing connections, which easily adapt to various system configurations. Additionally, the W3H400FDP complies with low NOx emission standards, making it an environmentally responsible choice that supports cleaner air quality.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: W3H400FDP\u003c\/li\u003e\n\u003cli\u003eFuel Type: Liquid Propane Gas\u003c\/li\u003e\n\u003cli\u003eHeating Capacity: 400,000 BTUs\u003c\/li\u003e\n\u003cli\u003eHeat Exchanger: Cupro nickel for superior salt water and chemical corrosion resistance\u003c\/li\u003e\n\u003cli\u003eExclusive “Totally Managed” water flow design for uniform heat transfer\u003c\/li\u003e\n\u003cli\u003ePatented header by-pass design improves efficiency and reduces pump run-time\u003c\/li\u003e\n\u003cli\u003eEnergy Savings: Up to 18% by lowering pump operation times\u003c\/li\u003e\n\u003cli\u003eElectrical Requirements: 120V \/ 240V\u003c\/li\u003e\n\u003cli\u003eAmperage: 5.5 amps\u003c\/li\u003e\n\u003cli\u003eMinimum Flow Rate: 20 gallons per minute\u003c\/li\u003e\n\u003cli\u003ePlumbing Connections: 2\" x 2-1\/2\" CPVC union fittings\u003c\/li\u003e\n\u003cli\u003eLow NOx emissions compliant with strict clean air quality standards\u003c\/li\u003e\n\u003cli\u003eIdeal for large residential and commercial pool and spa applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSKU: W3H400FDP\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":51576159306044,"sku":"W3H400FDP","price":5099.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-universal-h-series-propane-gas-heater-400000-btus-low-nox-w3h400fdp-hayward-660816.jpg?v=1750391389"},{"product_id":"haywardhseriesheatertransformer120240v24vacidxl2trf1930hppidxl2trf1930","title":"Hayward H-Series Heater Transformer 120\/240V-24VAC | IDXL2TRF1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward IDXL2TRF1930 120\/240 V → 24 V AC Transformer – For Universal H-Series Heaters\u003c\/h1\u003e\n\u003cp\u003ePart # IDXL2TRF1930 — a factory replacement transformer for Hayward Universal H-Series and induced-draft heaters. This unit converts standard 120 V or 240 V line voltage down to 24 V AC required by the heater’s control circuits and safety components.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAccepts 120 V or 240 V AC input — automatically adjusts to common household\/ equipment voltages.\u003c\/li\u003e\n\u003cli\u003eProvides stable 24 V AC output for burner controls, ignition module, sensors and safety circuits.\u003c\/li\u003e\n\u003cli\u003eOEM-spec design ensures proper fit and wiring clearances inside Hayward H-Series heater models, including low-NOx versions.\u003c\/li\u003e\n\u003cli\u003eRigid mounting and insulated wiring suitable for outdoor pool equipment installations.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for original transformer — simplifies heater repair or rebuild without rewiring or modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatible Heater Models\u003c\/h2\u003e\n\u003cp\u003eCompatible with Hayward Universal H-Series and induced-draft heaters, including H150, H200, H250, H300, H350 and H400 family models (both “FD” and “IDL2” series) that require a 24 V control transformer. Ideal when original unit fails or shows signs of malfunction.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Safety Notes\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBefore installation, shut off main power supply and disconnect heater from all power. Remove the old transformer, label and record existing wiring connections to the control board and safety devices. Install the new IDXL2TRF1930 in the original mount, reconnect wires to matching terminals, restore power and verify correct 24 V output. Test heater ignition and controls thoroughly before use. Always follow local electrical codes and manufacturer’s service manual instructions.\u003c\/p\u003e\n\u003ch2\u003eWhy Replace It?\u003c\/h2\u003e\n\u003cp\u003eReplacing a failing or damaged transformer restores safe and correct operation of ignition, controls, and safety interlocks. A faulty transformer can cause ignition failures, erratic behavior, or unsafe operating conditions — so timely replacement is critical to heater performance and longevity.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect transformer wiring annually for signs of corrosion, insulation damage or water exposure.\u003c\/li\u003e\n\u003cli\u003eEnsure the mounting area stays dry and free of debris to avoid moisture-related failures.\u003c\/li\u003e\n\u003cli\u003eTest 24 V output periodically or when heater controls act erratically to catch electrical issues early.\u003c\/li\u003e\n\u003cli\u003eIf heater undergoes frequent power cycles or maintenance, verify wiring connections are secure after each service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335983558972,"sku":"IDXL2TRF1930","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-h-series-heater-transformer-120240v-24vac-idxl2trf1930-heater-parts-1667917.jpg?v=1764772273"},{"product_id":"haywardhseriesfdheaterpropanegasvalvefdxlgsv0002hppfdxlgsv0002","title":"Hayward H-Series FD Heater Propane Gas Valve | FDXLGSV0002","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLGSV0002 Propane Gas Valve – Universal H-Series Pool \u0026amp; Spa Heater Replacement\u003c\/h1\u003e\n\u003cp\u003ePart # FDXLGSV0002 — a factory replacement propane gas valve designed for use with Hayward Universal H-Series Low-NOx pool and spa heaters. This valve regulates the flow of propane to the heater’s burner system to ensure safe, efficient ignition and combustion.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-spec gas valve compatible with propane-fired Hayward H-Series heater models (e.g. H150FDP, H200FDP, H250FDP, H300FDP, H350FDP, H400FDP).\u003c\/li\u003e\n\u003cli\u003ePrecisely regulates propane flow for stable flame, proper burner operation, and efficient heat output.\u003c\/li\u003e\n\u003cli\u003eDurable construction designed to handle typical pool-heater gas pressures and environmental exposure.\u003c\/li\u003e\n\u003cli\u003eDirect-replacement part — drops in place of the original valve without major modifications.\u003c\/li\u003e\n\u003cli\u003eCompatible with all control and safety systems originally designed for the heater (pressure switch, ignition module, venting, etc.).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eUse this valve when the existing gas valve in a propane H-Series heater fails — for example if it leaks, fails to open or close properly, or causes ignition issues. It’s also commonly replaced during maintenance or refurbishing to ensure continued safe operation.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eBefore servicing, shut off the propane supply, turn off all power to the heater, and allow the unit to cool. Remove the old gas valve carefully, noting orientation and gas line connections. Install the new FDXLGSV0002 valve, reconnect gas lines and electrical connections, and pressure-test the system per manufacturer instructions to confirm there are no leaks. After startup, monitor ignition, burn quality, and heater operation to verify correct installation.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Gas Valve?\u003c\/h2\u003e\n\u003cp\u003eChoosing the genuine FDXLGSV0002 ensures proper fit, flow characteristics, and safety compliance for your H-Series heater. Using the correct valve protects the heater’s performance, avoids potential leaks or ignition problems, and helps extend the life of the unit.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect gas valve and surrounding components yearly for signs of leaks, corrosion or wear.\u003c\/li\u003e\n\u003cli\u003eCheck gas pressure and regulator settings per heater manual to ensure safe operation.\u003c\/li\u003e\n\u003cli\u003eWhen cleaning or servicing the heater, avoid disturbing valve seals — retorque fittings per spec if loosened.\u003c\/li\u003e\n\u003cli\u003eIf the heater will be out of service for an extended period, shut off propane at the supply valve and relieve line pressure to safeguard internal components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335983657276,"sku":"FDXLGSV0002","price":249.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-h-series-fd-heater-propane-gas-valve-fdxlgsv0002-heater-parts-3491705.jpg?v=1764772272"},{"product_id":"haywardhseriesfdheaterignitorkitfdxlign1930hppfdxlign1930","title":"Hayward H-Series FD Heater Ignitor Kit | FDXLIGN1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLIGN1930 Igniter Assembly – Universal H-Series Low NOx Heater\u003c\/h1\u003e\n\u003cp\u003ePart # FDXLIGN1930 — the replacement igniter assembly for Hayward Universal H-Series Low NOx pool and spa heaters. This component restores reliable ignition and burner startup when the original igniter has failed or become defective.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-quality igniter designed for use in H-Series heaters to ensure consistent spark and ignition timing.\u003c\/li\u003e\n\u003cli\u003eCompatible with factory wiring and mounting configuration — direct drop-in replacement for the original igniter on supported heater models.\u003c\/li\u003e\n\u003cli\u003eDurable construction built to resist high heat, moisture, and the harsh environment inside a heater combustion chamber.\u003c\/li\u003e\n\u003cli\u003eRestores safe, reliable ignition—ideal when heater fails to light, produces repeated lockouts, or shows ignition error codes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eUsed when a Hayward low NOx heater fails to ignite, misfires, or the existing igniter becomes worn, corroded or damaged. Suitable for heater maintenance, refurbishment, or repair to restore full functionality.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eBefore servicing, shut off gas supply and power to the heater, and allow it to cool completely. Remove the heater cover and locate the existing igniter module. Disconnect wiring and mounting hardware. Install the new FDXLIGN1930 igniter assembly, reconnect wiring, re-secure mounting, restore gas and power, and perform a test ignition cycle. Confirm stable ignition and proper operation before closing the heater housing.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Igniter?\u003c\/h2\u003e\n\u003cp\u003eThe FDXLIGN1930 provides genuine manufacturer replacement quality and ensures proper combustion performance and safety. Replacing a failing igniter helps restore heater reliability, extend service life and reduce recurring ignition failures.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect igniter and wiring connections annually for signs of corrosion, wear or loose terminals.\u003c\/li\u003e\n\u003cli\u003eKeep the heater housing and combustion chamber clean of debris and moisture.\u003c\/li\u003e\n\u003cli\u003eAfter installation, monitor heater ignition over multiple start cycles to confirm consistent performance.\u003c\/li\u003e\n\u003cli\u003eIf ignition problems persist, also inspect the flame sensor, gas valve, and venting to ensure full system function—not just the igniter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335984279868,"sku":"FDXLIGN1930","price":78.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/products\/hayward-fd-series-ignitor-fdxlign1930-739885.jpg?v=1703029900"},{"product_id":"haywardheatexchangerassemblyfdxlhxa1250hppfdxlhxa1250","title":"Hayward Heat Exchanger Assembly | FDXLHXA1250","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLHXA1250 Heat Exchanger Assembly – Fits H250FD Universal H-Series Low NOx\u003c\/h1\u003e\n\u003cp\u003ePart # FDXLHXA1250 — a genuine Hayward heat exchanger assembly designed for use in H250FD series heaters in the Universal H-Series Low NOx lineup. This component restores proper heat transfer and performance in a pool heater when the existing exchanger has failed, leaked or become corroded.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFactory original Hayward heat exchanger assembly for H250FD Universal H-Series Low NOx pool and spa heaters.\u003c\/li\u003e\n\u003cli\u003eTray\/tube design engineered to deliver efficient heat transfer while maintaining durability in heater water loops.\u003c\/li\u003e\n\u003cli\u003eDesigned to withstand prolonged exposure to pool water, back-wash cycles and the chemical\/thermal demands of a heater application.\u003c\/li\u003e\n\u003cli\u003eFull drop-in replacement: simplifies servicing by maintaining correct plumbing connections, mounting, and performance specifications.\u003c\/li\u003e\n\u003cli\u003eHelps restore heater to manufacturer performance specifications, improving heating speed and system reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eThis heat exchanger assembly is used when your heater begins showing signs of heat transfer failure—such as slow heating, increased burner or pump runtimes, low outlet water temperature, visible corrosion or pinholes in the exchanger. It is ideal for service technicians or pool owners refurbishing the H250FD Universal H-Series heater to full operational condition.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eBefore beginning installation, turn off power to the heater, allow it to cool, and shut off water flow. Drain the heater water side or isolate plumbing per manufacturer instructions. Remove the front cover and access the heat exchanger area — disconnect any unions or plumbing connections, remove the old exchanger assembly and install the FDXLHXA1250 in its place. Re-connect all plumbing, inspect gasket\/seals, refill the heater water side, purge air, restore power, and verify proper operation and temperature rise under load.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Heat Exchanger?\u003c\/h2\u003e\n\u003cp\u003eChoosing the Hayward FDXLHXA1250 ensures you get a compatible OEM part that matches the original heater design, maintains performance, and reduces the risk of premature failure. Using a correct replacement helps avoid mismatch issues, ensures warranty alignment, and supports optimal heater life and efficiency.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the exchanger annually for signs of corrosion, leaks, or scaling on the water-side tubes.\u003c\/li\u003e\n\u003cli\u003eEnsure proper water chemistry and filter cleanliness to reduce sediment or scale buildup in the exchanger, which can degrade performance.\u003c\/li\u003e\n\u003cli\u003eAfter installation, monitor the heater’s temperature rise and runtime to confirm the exchanger is performing correctly.\u003c\/li\u003e\n\u003cli\u003eDuring off-season or long idle periods, protect the heater from freeze and confirm no residual water remains in the exchanger to prevent damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335985197372,"sku":"FDXLHXA1250","price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-heat-exchanger-assembly-fdxlhxa1250-heater-parts-9262357.jpg?v=1764112925"},{"product_id":"haywardhseriesfdpoolheaterheaderassemblyfdxlfor1930hppfdxlfor1930","title":"Hayward H-Series FD Pool Heater Header Assembly | FDXLFOR1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLFOR1930 O-Ring Kit for H-Series Low NOx Pool \u0026amp; Spa Heaters\u003c\/h1\u003e\n\u003cp\u003ePart # FDXLFOR1930 — a replacement O-ring kit designed for the front header on Hayward Universal H-Series Low NOx heaters. This kit restores the seal between the header and heat exchanger, helping prevent leaks and maintain proper pressure in the system.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Hayward O-ring kit engineered for the front header area of H-Series low NOx heaters.\u003c\/li\u003e\n\u003cli\u003eContains all necessary O-rings and sealing components to restore the header seal.\u003c\/li\u003e\n\u003cli\u003eDesigned to resist pool\/spa heater corrosion, high temperature cycling, and standard chemical exposure.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the heater’s front header seal — no modification required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cp\u003eThis O-ring kit is appropriate when the front header of a compatible Hayward heater begins leaking at the header connection, or when servicing the heater and re-sealing is required. Used in low NOx heater models where the header must be removed or replaced, or the seal shows signs of wear or degradation.\u003c\/p\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003eBefore installation, shut off the heater and allow it to cool completely. Turn off any water flow and relieve system pressure. Remove the header assembly, clean the sealing surfaces thoroughly, install the new O-rings from the FDXLFOR1930 kit per the service instructions, reassemble the header and retighten to the manufacturer’s specified torque. Restart the heater and verify there are no leaks at the header connection.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Kit?\u003c\/h2\u003e\n\u003cp\u003eSelecting the Hayward FDXLFOR1930 kit ensures you are using manufacturer-approved sealing components designed for the H-Series heaters. It helps maintain system integrity, prevents future leaks, and supports proper heater performance and longevity.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the header connection annually for signs of seepage or corrosion around the header seal area.\u003c\/li\u003e\n\u003cli\u003eIf the heater has been subject to freezing, high chemical load or frequent thermal cycling, consider replacing the O-rings proactively when servicing the header.\u003c\/li\u003e\n\u003cli\u003eUse only clean, lint-free cloths to clean the sealing face and always install fresh O-rings from the kit — reuse of old O-rings may lead to leaks.\u003c\/li\u003e\n\u003cli\u003eEnsure water chemistry is properly maintained to reduce corrosion and thermal stress on heater components and seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335985819964,"sku":"FDXLFOR1930","price":28.17,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardfdpoolheaterheaderassemblyfdxlfha1930hppfdxlfha1930","title":"Hayward FD Pool Heater Header Assembly | FDXLFHA1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLFHA1930 Header Assembly – Universal H-Series Low NOx Pool Heater\u003c\/h1\u003e\n\u003cp\u003eThe Hayward FDXLFHA1930 header assembly is a direct replacement front manifold for Universal H-Series Low NOx pool heaters. It restores proper water flow and sealing through the heat exchanger and is designed for major heater models in the series.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplaces the front header assembly in the Universal H-Series Low NOx heater line.\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered to fit existing heater plumbing and mounting configuration.\u003c\/li\u003e\n\u003cli\u003eConstructed to maintain efficient circulation and manage water flow through the heat exchanger.\u003c\/li\u003e\n\u003cli\u003eHelps restore heater performance when the original header has been compromised.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e FDXLFHA1930\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Front header\/manifold assembly for targeted heater series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (approx):\u003c\/strong\u003e ~5.6 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Universal H-Series Low NOx models (various BTU ratings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h2\u003e\n\u003cp\u003ePrior to installation, shut off the heater, ensure no pressure in the lines, and allow it to cool. Remove the old header assembly and inspect surrounding castings and connections. Clean all seal surfaces and re-install the replacement header assembly ensuring alignment and full sealing. After installation, restore service and confirm proper operation without leaks or restrictions.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCheck for signs of corrosion, cracking or leakage at the header assembly during scheduled maintenance.\u003c\/li\u003e\n\u003cli\u003eIf heater flow drops or heat output decreases, inspect the header for wear or damage as part of your diagnostics.\u003c\/li\u003e\n\u003cli\u003eSeal surfaces and connections should be cleaned and re-tensioned if the unit is serviced again.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose This Assembly?\u003c\/h2\u003e\n\u003cp\u003eFor pool service professionals and advanced homeowners, this replacement header assembly offers an efficient way to restore the integrity of a Universal H-Series Low NOx heater. Instead of replacing the entire unit, the right header restoration can get the system back in service quickly and reliably.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335992963388,"sku":"FDXLFHA1930","price":238.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-fd-pool-heater-header-assembly-fdxlfha1930-heater-parts-6363568.jpg?v=1763588753"},{"product_id":"haywardheatexchangerassemblyfdxlhxa1150hppfdxlhxa1150","title":"Hayward Heat Exchanger Assembly | FDXLHXA1150","description":"\u003cdiv\u003e\n\u003ch2\u003eHayward FDXLHXA1150 – Heat Exchanger Assembly\u003c\/h2\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Hayward FDXLHXA1150 is a genuine OEM heat exchanger assembly designed for Hayward Universal H-Series Low NOx pool heaters. It restores efficient heating performance by replacing a worn, leaking, or corroded heat exchanger and is engineered specifically for 150,000 BTU heater models.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect OEM replacement for 150,000 BTU H-Series Low NOx heaters.\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant construction for long service life in chemically treated pool water.\u003c\/li\u003e\n\u003cli\u003eRestores proper heat transfer and heater efficiency.\u003c\/li\u003e\n\u003cli\u003eDesigned to fit factory mounting points and plumbing connections for easy installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: FDXLHXA1150\u003c\/li\u003e\n\u003cli\u003eHeater Size: 150,000 BTU\u003c\/li\u003e\n\u003cli\u003eCompatible Models: Hayward H-Series Low NOx heaters such as H150FD and equivalent 150k units\u003c\/li\u003e\n\u003cli\u003eApplication: Heat exchanger replacement for in-ground pool and spa heaters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis heat exchanger is used when the existing exchanger in an H-Series Low NOx heater becomes restricted, corroded, or develops leaks. It is designed to fit 150k BTU models and should be matched to the heater's exact series and configuration before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShut off power, water flow, and gas supply to the heater before servicing.\u003c\/li\u003e\n\u003cli\u003eAllow the heater to cool and remove the access panels to reach the exchanger assembly.\u003c\/li\u003e\n\u003cli\u003eDisconnect plumbing, sensors, and mounting components attached to the old exchanger.\u003c\/li\u003e\n\u003cli\u003eRemove the old exchanger and install the new FDXLHXA1150, ensuring all seals and fittings are properly aligned.\u003c\/li\u003e\n\u003cli\u003eReconnect plumbing, sensors, power, and reinstall heater panels. Restore water flow, power, and gas supply.\u003c\/li\u003e\n\u003cli\u003eStart the heater and verify proper heating performance and leak-free operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTroubleshooting\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInadequate heating:\u003c\/strong\u003e Check water flow rate, verify all plumbing is opened, and ensure exchanger is correctly installed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaks at fittings:\u003c\/strong\u003e Inspect seals and connections for proper seating and torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBurner issues:\u003c\/strong\u003e Confirm all gaskets and panels are installed correctly and ventilation is unobstructed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance Tip\u003c\/h3\u003e\n\u003cp\u003eInspect the heater annually for scaling or corrosion, maintain proper water chemistry, and verify adequate flow through the heat exchanger. Early detection of wear can extend heater life and reduce energy costs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335996895548,"sku":"FDXLHXA1150","price":1099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-heat-exchanger-assembly-fdxlhxa1150-heater-parts-1624076.jpg?v=1763154085"},{"product_id":"haywardcombustionblowerkitforuniversalhseriesheaterfdxlbwr1930hppfdxlbwr1930","title":"Hayward Combustion Blower Kit for Universal H-Series Heater | FDXLBWR1930","description":"\u003cdiv\u003e\n\u003ch2\u003eHayward FDXLBWR1930 – Combustion Blower Kit for Universal H-Series Heaters\u003c\/h2\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Hayward FDXLBWR1930 is a complete factory replacement combustion blower kit designed for use with the Universal H-Series low-NOx pool and spa heaters. It provides the necessary blower hardware to maintain proper air-flow and combustion operation in the heater unit.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM kit designed for Hayward Universal H-Series heaters (Natural Gas or Propane, low NOx) including models such as H150FDN\/FD 150, H200FDN\/FD 200, H250FDN\/FD 250, H300FDN\/FD 300, H350FDN\/FD 350, H400FDN\/FD 400.\u003c\/li\u003e\n\u003cli\u003eReliable blower assembly ensures efficient combustion air supply and stable heater operation.\u003c\/li\u003e\n\u003cli\u003eFull replacement kit—includes blower motor, fan assembly, mounting hardware and wiring connections as required.\u003c\/li\u003e\n\u003cli\u003eBacked by equipment-manufacturer compatibility to keep heater running safely and in code compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart Number: FDXLBWR1930\u003c\/li\u003e\n\u003cli\u003eApplication: Combustion blower kit for Universal H-Series pool\/spa heaters\u003c\/li\u003e\n\u003cli\u003eWeight: ~6.5 lb (shipping weight) and packaging size ~12″ × 12″ × 16″ per standard kit dimensions.\u003c\/li\u003e\n\u003cli\u003eWarranty: 1 year parts only (for standard OEM replacement) when installed properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cp\u003eThis kit is intended for the Universal H-Series low-NOx pool and spa heater models manufactured by Hayward. Before purchasing, verify that your heater’s model number falls under the H-Series (for example H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, H400FDP) and that the original blower kit part matches this replacement. Installing the correct blower helps maintain proper combustion, reliable heater start-up and safe operation.\u003c\/p\u003e\n\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTurn off all power to the heater and shut off the gas supply line before servicing.\u003c\/li\u003e\n\u003cli\u003eAllow the heater to cool and relieve any pressure or gas residuals per manufacturer service instructions.\u003c\/li\u003e\n\u003cli\u003eRemove the old blower motor assembly and mounting plate; disconnect wiring and controls carefully, noting original orientation.\u003c\/li\u003e\n\u003cli\u003eInstall the new blower kit: mount the fan\/motor assembly, secure hardware, reconnect wiring, and verify proper alignment and clearance.\u003c\/li\u003e\n\u003cli\u003eRestore gas and power supplies, then perform a test ignition cycle; monitor for correct blower operation, combustion sequence and absence of error\/fault codes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTroubleshooting \u0026amp; Maintenance Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlower fails to start:\u003c\/strong\u003e Check power supply, motor wiring, fuse or breaker, and ensure the blower connector is securely attached.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcessive noise or vibration:\u003c\/strong\u003e Confirm the fan is mounted correctly, balanced, and no foreign objects obstructing blower wheel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater faults out or doesn’t maintain flame:\u003c\/strong\u003e The blower may be under-performing; verify correct blower kit installation, airflow path and no intake or exhaust blockages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance Tip\u003c\/h3\u003e\n\u003cp\u003eInspect the blower assembly annually during heater service. Clean any dust or debris build-up, check mounting bolts for tightness, and ensure the blower motor cooling vents are clear of obstruction. Replacing worn blower kits like the FDXLBWR1930 proactively can help avoid heater downtime and premature component failure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52335999353148,"sku":"FDXLBWR1930","price":246.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-combustion-blower-kit-for-universal-h-series-heater-fdxlbwr1930-heater-parts-1665589.jpg?v=1763068545"},{"product_id":"haywardhseriesfdheaterintegratedcontrolboardfdxlicb1930hppfdxlicb1930","title":"Hayward H-Series FD Heater Integrated Control Board | FDXLICB1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLICB1930 Integrated Control Board Kit\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e FDXLICB1930\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eA factory-original integrated control board kit engineered for use in Hod-forced draft advanced heaters in the Hayward Universal H-Series Low-NOx line. Designed to provide full control and diagnostics for combustion, ignition and safety operations of compatible heater installations.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFits compatible Hayward Universal H-Series Low-NOx heaters requiring the integrated control board – models such as H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP and others.\u003c\/li\u003e\n\u003cli\u003eIdeal replacement when the existing control board is faulty, damaged, burned, or throwing communication or ignition fault codes.\u003c\/li\u003e\n\u003cli\u003eDirect replacement kit for systems specifying part number FDXLICB1930.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFully integrated circuit board with relays and control logic for combustion, fan, ignition, and diagnostic feedback.\u003c\/li\u003e\n\u003cli\u003eOEM-exact fit, built to original equipment tolerances for proper mounting and wiring compatibility.\u003c\/li\u003e\n\u003cli\u003eDesigned to operate in heater control environments with pool water chemical exposure, temperature variation and rigorous safety demands.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eTurn off all power and fuel supply before servicing. Remove access panels from the heater housing and document wiring layout. Disconnect wiring harnesses, unscrew the existing control board module, and install the new FDXLICB1930 unit in the exact orientation. Reconnect wiring per original layout, restore all connections, power up the system, and run the heater through a diagnostic cycle to verify correct operation.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tip\u003c\/h2\u003e\n\u003cp\u003eInspect the board annually for signs of overheating, burnt components or corrosion. Ensure wiring harnesses are secure and clean. Replace the board if you notice erratic behavior, failed ignition cycles or repeated fault codes to maintain safe and reliable heater performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52336002662716,"sku":"FDXLICB1930","price":326.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/products\/hayward-fd-series-integrated-control-board-fdxlicb1930-pool-heater-parts-522725.jpg?v=1702083598"},{"product_id":"haywardheatexchangerassemblyh400fdfdxlhxa1400hppfdxlhxa1400","title":"Hayward Heat Exchanger Assembly-H400FD | FDXLHXA1400","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLHXA1400 Heat Exchanger Assembly – 400 K BTU\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e FDXLHXA1400\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eA factory-original heat exchanger assembly designed for the Hayward Universal H-Series Low NOx 400,000 BTU pool and spa heaters. Built with cupro-nickel tubing and designed for salt-water and high-chemical-use environments to deliver reliable heat transfer and long life.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFits Hayward Universal H-Series heater models H400FDN (natural gas) and H400FDP (propane).\u003c\/li\u003e\n\u003cli\u003eUse when the original heat exchanger is cracked, corroded, leaking, or causing heater flow faults or inefficiency.\u003c\/li\u003e\n\u003cli\u003eDirect replacement component for systems specifying part number FDXLHXA1400.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRated capacity: 400,000 BTU\/h.\u003c\/li\u003e\n\u003cli\u003ePlumbing connection size: 2″ × 2 ½″ union links for heater water flow ports.\u003c\/li\u003e\n\u003cli\u003eConstructed of cupro-nickel tubing for superior corrosion resistance in salt or chemically treated pool water.\u003c\/li\u003e\n\u003cli\u003eApproximate weight: 48.5 lb (shipping weight).\u003c\/li\u003e\n\u003cli\u003eDesigned for in-ground pool\/spa installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eTurn off power and fuel supply to the heater. Open the heater access panel, drain or isolate water flow, remove the old heat exchanger assembly, clean the internal heater chamber and inspect for any debris or damage. Install the new FDXLHXA1400 assembly, secure unions, restore water flow, purge air, reconnect fuel and power, and test heater operation ensuring proper ignition, flame pattern and efficient heating.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tip\u003c\/h2\u003e\n\u003cp\u003eInspect the heat exchanger during each annual service interval for signs of corrosion, scaling, leaks or flow restriction. Clean as recommended by the manufacturer or replace the unit if performance declines to maintain heater efficiency and prevent failure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52336003547452,"sku":"FDXLHXA1400","price":1399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-heat-exchanger-assembly-h400fd-fdxlhxa1400-heater-parts-2585324.jpg?v=1762544357"},{"product_id":"haywardfdheaterbypasscartridgekitfdxlbpk1930hppfdxlbpk1930","title":"Hayward FD Heater Bypass Cartridge Kit | FDXLBPK1930","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward FDXLBPK1930 Bypass Cartridge Kit – Universal H-Series Low NOx Heaters\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e FDXLBPK1930\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis bypass cartridge kit is designed for select Hayward Universal H-Series Low NOx pool and spa heaters. It allows the heater to bypass the standard flow path when required, maintaining proper flow and operation while extending system life.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFits Hayward H-Series “FD” model heaters (for example H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP) as originally specified.\u003c\/li\u003e\n\u003cli\u003eRecommended replacement when the existing bypass cartridge is worn, clogged, damaged, or the heater displays flow-related errors.\u003c\/li\u003e\n\u003cli\u003eDirect replacement for systems that list part number FDXLBPK1930.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBypass cartridge design optimized for the hydraulic requirements of Universal H-Series Low NOx heaters.\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered to maintain proper flow, pressure drop, and heater performance under varying conditions.\u003c\/li\u003e\n\u003cli\u003eIncludes all cartridge components required for a full bypass assembly rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eTurn off heater system power and shut off gas supply. Drain or isolate the water flow through the heater and relieve system pressure. Remove the existing bypass cartridge assembly, inspect housing and seals for wear or damage, install the new FDXLBPK1930 kit ensuring proper orientation and seating. Restore water flow, purge air, power up the heater, and verify proper ignition and stable operation.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tip\u003c\/h2\u003e\n\u003cp\u003eInspect the bypass cartridge during each annual heater service. If you detect debris buildup, restricted flow, scoring or wear on cartridge elements, replace with the FDXLBPK1930 kit to avoid flow faults, heater lock-outs or reduced efficiency.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52336004563260,"sku":"FDXLBPK1930","price":40.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-fd-heater-bypass-cartridge-kit-fdxlbpk1930-heater-parts-8364951.jpg?v=1762544348"},{"product_id":"haywardpumpunionconnectorkithppspx3200unkithppspx3200unkit","title":"Hayward Pump Union Connector Kit | SPX3200UNKIT","description":"\u003cdiv\u003e\n\u003ch1\u003eHayward SPX3200UNKIT Union Connector Kit\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e SPX3200UNKIT\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis union connector kit provides two genuine Hayward union connectors, each with a nut and gasket, intended for 2″ plumbing connections on select Hayward pumps, filters, and heaters. It simplifies removal and service of equipment while maintaining a secure, leak-resistant seal.\u003c\/p\u003e\n\u003ch2\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for 2″ union connections on Hayward TriStar® SP3200EE, SP3200X, SP3600 pumps.\u003c\/li\u003e\n\u003cli\u003eAlso compatible with Hayward EcoStar® SP3400VSP series and NorthStar® SP4000\/ SP4000X (2008 and later).\u003c\/li\u003e\n\u003cli\u003eFits select Hayward Universal H-Series heaters, HeatPro® and SwimClear® cartridge filters where 2″ unions are specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKit includes: two (2) union connectors, two (2) union nuts and two (2) gaskets.\u003c\/li\u003e\n\u003cli\u003eSize: 2″ nominal plumbing (union hose size ~2.5″ for 2″ line).\u003c\/li\u003e\n\u003cli\u003eMaterial: corrosion-resistant PVC material, designed to integrate with Hayward plumbing components.\u003c\/li\u003e\n\u003cli\u003eOEM Replacement — ensures correct fit, torque and alignment for Hayward equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eShut off the pump and relieve system pressure. Remove the existing union hardware (nut, connector, gasket) from the equipment port. Clean the port face and thread area. Install the new connector body and gasket, hand-tighten the new union nut until seated, and use a hose clamp or back-nut torque per manufacturer’s recommendation. Run the system and check for leaks around the union. After 24 hours, re-check clamp torque if required.\u003c\/p\u003e\n\u003ch2\u003eMaintenance Tip\u003c\/h2\u003e\n\u003cp\u003eInspect union connectors annually or anytime the pump is removed. Over time gaskets compress and nuts may loosen. If you notice slight leaks, softened gaskets, or difficulty removing the union nut, replace with this kit to restore service-friendly access and a secure, leak-free connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52336009445692,"sku":"SPX3200UNKIT","price":44.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-pump-union-connector-kit-spx3200unkit-pump-parts-2024556.jpg?v=1762188852"},{"product_id":"haywardpoolheaterexhaustgastemperaturelimitfdxlegl1930hppfdxlegl1930","title":"Hayward Pool Heater Exhaust Gas Temperature Limit | FDXLEGL1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLEGL1930 Exhaust Gas Temperature Limit (One-Use) — Universal H-Series \/ FD \/ H-Series 135K \/ Universal HC\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e is an OEM \u003cstrong\u003eexhaust gas temperature limit\u003c\/strong\u003e safety device used on select Hayward pool\n    heaters. This is a \u003cstrong\u003eone-use (non-resettable)\u003c\/strong\u003e limit that helps protect the heater by shutting it down if exhaust gas\n    temperatures exceed safe operating levels. It’s a critical safety component for preventing damage from overheating, airflow restriction,\n    or combustion issues.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal H-Series\u003c\/strong\u003e heater applications (model\/revision dependent)\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal H-Series Low NOx FD\u003c\/strong\u003e heater applications (model\/revision dependent)\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eH-Series 135,000 BTU\u003c\/strong\u003e induced draft \/ above-ground heaters such as \u003cstrong\u003eH135ID\u003c\/strong\u003e and \u003cstrong\u003eABG135\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal HC\u003c\/strong\u003e heaters including \u003cstrong\u003eHDF275\u003c\/strong\u003e and \u003cstrong\u003eHDF400\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFit tip:\u003c\/strong\u003e Heater parts can vary by model and revision. Confirm your heater model from the data plate and verify\n    \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e on the correct parts diagram before ordering.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eWhat It Fixes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater shutdown or lockout due to a tripped\/failed exhaust temperature limit\u003c\/li\u003e\n    \u003cli\u003eSafety circuit open condition traced to a blown one-time exhaust limit device\u003c\/li\u003e\n    \u003cli\u003ePreventive replacement during combustion\/venting service when the limit has been triggered\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Causes of an Exhaust Limit Trip (Address Before Restarting)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBlocked or restricted exhaust\/venting\u003c\/li\u003e\n    \u003cli\u003eRestricted air intake, debris in blower area, or poor combustion air supply\u003c\/li\u003e\n    \u003cli\u003eExchanger\/combustion chamber issues or soot buildup\u003c\/li\u003e\n    \u003cli\u003eIncorrect gas supply\/combustion setup or other combustion-related faults\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e one-use exhaust gas temperature limit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLEGL1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eSafety Type: \u003cstrong\u003eOne-use (non-resettable) exhaust gas limit\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eWarranty: \u003cstrong\u003e1-Year (Parts Only)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power and gas\u003c\/strong\u003e to the heater before service and allow the unit to cool.\u003c\/li\u003e\n    \u003cli\u003eThis is a \u003cstrong\u003esafety device\u003c\/strong\u003e; if it has tripped, diagnose and correct the underlying cause before operating the heater again.\u003c\/li\u003e\n    \u003cli\u003eInstallation and combustion\/venting diagnosis should be performed by a \u003cstrong\u003equalified technician\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLEGL1930\"\u003eHayward FDXLEGL1930 (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFSK1930\"\u003eHayward FDXLFSK1930 Fuse Service Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFWP1930\"\u003eHayward FDXLFWP1930 Field Wiring Panel \/ Fuse Board (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLIGN1930\"\u003eHayward FDXLIGN1930 Igniter (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater’s air intake and exhaust areas clear of leaves, insects, and debris to maintain proper airflow.\u003c\/li\u003e\n    \u003cli\u003eIf the heater shows signs of soot or strong exhaust odor, stop use and have combustion inspected.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper water flow and balanced water chemistry to reduce internal stress on the heater.\u003c\/li\u003e\n    \u003cli\u003eAddress any safety shutdowns promptly—repeated cycling without fixing root causes can lead to larger failures.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938245948,"sku":"FDXLEGL1930","price":25.75,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesfdpoolheaterfuseservicekitfdxlfsk1930hppfdxlfsk1930","title":"Hayward H-Series FD Pool Heater Fuse Service Kit | FDXLFSK1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLFSK1930 Fuse Service Kit (FD) for Universal H-Series Low NOx FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLFSK1930\u003c\/strong\u003e is an OEM \u003cstrong\u003efuse service kit\u003c\/strong\u003e for Hayward\n    \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. It provides the replacement fuses used on the heater’s electrical\n    protection circuits, making it a convenient kit for troubleshooting, preventive maintenance, or restoring operation after a blown fuse.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx FD heaters:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso commonly listed for \u003cstrong\u003eH500FDN\u003c\/strong\u003e \/ \u003cstrong\u003eH500FDP\u003c\/strong\u003e (verify your heater model and parts diagram)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included (8 Fuses Total)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) \u003cstrong\u003e3.0A\u003c\/strong\u003e violet fuse\u003c\/li\u003e\n    \u003cli\u003e(2) \u003cstrong\u003e1.5A\u003c\/strong\u003e fuses\u003c\/li\u003e\n    \u003cli\u003e(2) \u003cstrong\u003e3.0A\u003c\/strong\u003e short glass cartridge fuses\u003c\/li\u003e\n    \u003cli\u003e(3) \u003cstrong\u003e3.0A\u003c\/strong\u003e long glass cartridge fuses\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Fixes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater won’t power up or loses control power due to a \u003cstrong\u003eblown fuse\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIntermittent operation caused by an aged\/weak fuse\u003c\/li\u003e\n    \u003cli\u003eProvides correct fuse types for service after diagnosing the cause of an overload\/short\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power\u003c\/strong\u003e to the heater at the breaker before opening the cabinet.\u003c\/li\u003e\n    \u003cli\u003eReplace fuses only with the \u003cstrong\u003esame type and amp rating\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003eIf a replacement fuse blows again, stop and diagnose the underlying issue (wiring short, failed component, moisture intrusion, etc.).\u003c\/li\u003e\n    \u003cli\u003eElectrical service should be performed by a qualified technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLFSK1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts \/ Electrical\u003c\/strong\u003e (Fuse Service Kit)\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e (commonly listed for commercial applications as well)\u003c\/li\u003e\n    \u003cli\u003eApprox. Shipping Weight: \u003cstrong\u003e0.6 lb\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFSK1930\"\u003eHayward FDXLFSK1930 Fuse Service Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFWP1930\"\u003eHayward FDXLFWP1930 Field Wiring Panel \/ Fuse Board (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Water Pressure Switch (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FDXLTER1931 Thermistor \/ Temp Sensor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHLI1930\"\u003eHayward FDXLHLI1930 High Limit Switch Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater cabinet sealed and dry—moisture is a common cause of corrosion and electrical faults that can blow fuses.\u003c\/li\u003e\n    \u003cli\u003eIf fuses fail repeatedly, inspect for rubbed-through wires, rodent damage, loose terminals, or failed components before replacing more fuses.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper flow (clean baskets\/filters) to avoid nuisance faults that can stress electrical components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938213180,"sku":"FDXLFSK1930","price":33.86,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesfdpoolheaterfieldwiringpanelkitfdxlfwp1930hppfdxlfwp1930","title":"Hayward H-Series FD Pool Heater Field Wiring Panel Kit | FDXLFWP1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLFWP1930 Field Wiring Panel Kit (Fuse Board) for Universal H-Series Low NOx FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLFWP1930\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003efield wiring panel kit\u003c\/strong\u003e (often referred to as the\n    \u003cstrong\u003efuse board\u003c\/strong\u003e) for Hayward \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. This assembly provides the heater’s\n    primary \u003cstrong\u003efield wiring connection interface\u003c\/strong\u003e and helps distribute incoming power safely to the heater’s control circuits.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx FD heaters:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso commonly listed for \u003cstrong\u003eH500FDN\u003c\/strong\u003e \/ \u003cstrong\u003eH500FDP\u003c\/strong\u003e (verify your heater model and parts diagram)\u003c\/li\u003e\n    \u003cli\u003eUsed on many \u003cstrong\u003eASME\/commercial\u003c\/strong\u003e Universal H-Series FD heater configurations (model\/revision dependent)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Does\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eProvides the \u003cstrong\u003eterminal\/connection point\u003c\/strong\u003e for field wiring inside the heater\u003c\/li\u003e\n    \u003cli\u003eFunctions as the heater’s \u003cstrong\u003efuse board\/power distribution panel\u003c\/strong\u003e for supported circuits\u003c\/li\u003e\n    \u003cli\u003eHelps ensure \u003cstrong\u003ereliable power delivery\u003c\/strong\u003e to the heater’s electronics when the original panel is damaged or corroded\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Reasons to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater won’t power up and diagnostics point to a failed\/damaged \u003cstrong\u003efuse board\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eBurned terminals, heat damage, or corrosion on the wiring panel\u003c\/li\u003e\n    \u003cli\u003eMoisture intrusion inside the heater cabinet causing board damage\u003c\/li\u003e\n    \u003cli\u003eIntermittent power issues after confirming supply voltage and wiring integrity\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power at the breaker\u003c\/strong\u003e before opening the heater.\u003c\/li\u003e\n    \u003cli\u003eLabel or photograph all wiring connections before removal for correct reinstallation.\u003c\/li\u003e\n    \u003cli\u003eIf the original failure was moisture-related, fix the sealing\/conduit issue before installing the new panel.\u003c\/li\u003e\n    \u003cli\u003eElectrical service should be performed by a qualified technician and must follow applicable codes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLFWP1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts \/ Electrical\u003c\/strong\u003e (Field Wiring Panel \/ Fuse Board)\u003c\/li\u003e\n    \u003cli\u003eHeater Family: \u003cstrong\u003eUniversal H-Series Low NOx FD\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLFWP1930\"\u003eHayward FDXLFWP1930 Field Wiring Panel Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Water Pressure Switch (FD Heaters) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FDXLTER1931 Thermistor \/ Temp Sensor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHLI1930\"\u003eHayward FDXLHLI1930 High Limit Switch Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=IDXL2TRF1930\"\u003eHayward IDXL2TRF1930 Transformer (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLIGN1930\"\u003eHayward FDXLIGN1930 Igniter (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the heater cabinet sealed and dry—moisture is a leading cause of electrical panel and board failures.\u003c\/li\u003e\n    \u003cli\u003eIf the heater loses power intermittently, inspect supply voltage, wiring terminals, and any signs of heat discoloration at connections.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper water flow (clean baskets\/filters) to reduce nuisance faults that can lead to repeated cycling and electrical stress.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938278716,"sku":"FDXLFWP1930","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-h-series-fd-pool-heater-field-wiring-panel-kit-fdxlfwp1930-heater-parts-5329478.jpg?v=1772790148"},{"product_id":"haywardfdheaterhighlimitkitfdxlhli1930hppfdxlhli1930","title":"Hayward FD Heater High Limit Kit | FDXLHLI1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLHLI1930 High Limit Switch Kit (135°F) for Universal H-Series Low NOx FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLHLI1930\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003ehigh limit switch kit\u003c\/strong\u003e rated at \u003cstrong\u003e135°F\u003c\/strong\u003e for\n    Hayward \u003cstrong\u003eUniversal H-Series Low NOx\u003c\/strong\u003e “FD” pool heaters. The high limit is a critical safety device that helps protect the\n    heater by shutting it down if internal water temperature rises beyond a safe threshold—most commonly caused by low water flow, restricted\n    circulation, or scale buildup.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx FD heaters:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Fixes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater shutting down due to a failed\/out-of-spec high limit switch\u003c\/li\u003e\n    \u003cli\u003eIntermittent heat cycles caused by a high limit that opens unpredictably\u003c\/li\u003e\n    \u003cli\u003eCorroded, damaged, or heat-stressed high limit components found during service\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eBefore Replacing the High Limit\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCheck and clean the \u003cstrong\u003efilter\u003c\/strong\u003e and \u003cstrong\u003epump basket\u003c\/strong\u003e (low flow is the #1 cause of high-limit trips).\u003c\/li\u003e\n    \u003cli\u003eVerify all \u003cstrong\u003evalves\u003c\/strong\u003e are open and any \u003cstrong\u003ebypass\u003c\/strong\u003e is set correctly.\u003c\/li\u003e\n    \u003cli\u003eConfirm adequate \u003cstrong\u003ewater flow rate\u003c\/strong\u003e through the heater.\u003c\/li\u003e\n    \u003cli\u003eInspect for \u003cstrong\u003escale\u003c\/strong\u003e in the heater if water chemistry has been out of balance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHigh limit switch kit (135°F) for compatible FD heater applications\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power\u003c\/strong\u003e to the heater at the breaker before servicing.\u003c\/li\u003e\n    \u003cli\u003eLabel or photograph wire positions before removal for correct reinstallation.\u003c\/li\u003e\n    \u003cli\u003eIf the heater continues to trip after replacement, diagnose the underlying \u003cstrong\u003eflow\/scale\u003c\/strong\u003e issue to prevent repeat shutdowns.\u003c\/li\u003e\n    \u003cli\u003eInstallation is recommended for a qualified service technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLHLI1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eType: \u003cstrong\u003eHigh Limit Switch Kit\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eTemperature Rating: \u003cstrong\u003e135°F\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eApplication: \u003cstrong\u003eUniversal H-Series Low NOx FD Heaters\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHLI1930\"\u003eHayward FDXLHLI1930 High Limit Switch Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FD Heater Water Pressure Switch (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FD Heater Thermistor \/ Temp Sensor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20H-Series%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20filter%20pressure%20gauge\"\u003eFilter Pressure Gauges (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBackwash\/clean the filter when pressure rises 8–10 PSI above your clean starting pressure.\u003c\/li\u003e\n    \u003cli\u003eMaintain balanced water chemistry to reduce scale in the heat exchanger.\u003c\/li\u003e\n    \u003cli\u003eIf the heater trips on safety limits repeatedly, address circulation problems first—replacing switches won’t fix chronic low flow.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938311484,"sku":"FDXLHLI1930","price":58.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-fd-heater-high-limit-kit-fdxlhli1930-heater-parts-2891452.jpg?v=1772790147"},{"product_id":"haywardheatexchangerassemblyfdxlhxa1200hppfdxlhxa1200","title":"Hayward Heat Exchanger Assembly | FDXLHXA1200","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLHXA1200 Heat Exchanger Assembly for Universal H-Series Low NOx H200FD (200K BTU)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLHXA1200\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003eheat exchanger assembly\u003c\/strong\u003e built for the\n    \u003cstrong\u003eUniversal H-Series Low NOx H200FD\u003c\/strong\u003e pool heater platform. This is the primary heat-transfer component inside the heater\n    that moves heat from the combustion chamber into the pool water. It’s commonly replaced when the exchanger is \u003cstrong\u003eleaking\u003c\/strong\u003e,\n    \u003cstrong\u003erestricted\u003c\/strong\u003e by scale\/debris, or damaged from \u003cstrong\u003efreeze\u003c\/strong\u003e events or long-term corrosion.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx \u003cstrong\u003eH200FDN\u003c\/strong\u003e (Natural Gas) heaters\u003c\/li\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx \u003cstrong\u003eH200FDP\u003c\/strong\u003e (Propane) heaters\u003c\/li\u003e\n    \u003cli\u003eBTU class: \u003cstrong\u003e200,000 BTU\u003c\/strong\u003e (H200FD)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFit tip:\u003c\/strong\u003e Confirm your heater model on the data plate (H200FDN or H200FDP) and match the parts diagram for your heater\n    revision before ordering.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCommon Reasons to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eWater dripping\/leaking from inside the heater cabinet during circulation or heating\u003c\/li\u003e\n    \u003cli\u003eReduced heating performance from internal restriction or heavy scale buildup\u003c\/li\u003e\n    \u003cli\u003eFreeze damage (cracked tubes\/manifold area) from improper winterization\u003c\/li\u003e\n    \u003cli\u003eCorrosion\/pitting caused by aggressive or unbalanced water chemistry\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) Complete \u003cstrong\u003eFDXLHXA1200\u003c\/strong\u003e heat exchanger assembly\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e Seals, O-rings, headers\/manifolds, and other disturbed hardware may be sold separately depending on your heater’s\n    revision. Inspect and replace any flattened or damaged seals during reassembly.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eShut off \u003cstrong\u003epower\u003c\/strong\u003e and \u003cstrong\u003egas\u003c\/strong\u003e to the heater, relieve system pressure, and allow the unit to cool before service.\u003c\/li\u003e\n    \u003cli\u003eReplacing a heat exchanger is a major repair—professional service is strongly recommended.\u003c\/li\u003e\n    \u003cli\u003eIf the old exchanger failed from scale or low flow, correct the root cause (filter condition, bypass settings, pump flow, water balance) to prevent repeat damage.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, inspect carefully for leaks during the first heat cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLHXA1200\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eHeater Platform: \u003cstrong\u003eUniversal H-Series Low NOx H200FD\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eApprox. Weight: \u003cstrong\u003e~33 lb\u003c\/strong\u003e (varies by packaging\/shipping configuration)\u003c\/li\u003e\n    \u003cli\u003eUPC (commonly listed): \u003cstrong\u003e610377104586\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHXA1200\"\u003eHayward FDXLHXA1200 (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=H200FDN%20parts\"\u003eHayward H200FDN Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=H200FDP%20parts\"\u003eHayward H200FDP Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FD Heater Water Pressure Switch (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FD Heater Thermistor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLPRM1930\"\u003eHayward FD Return Manifold\/Header Kit (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=heater%20union%20o-ring%20hayward%20FD\"\u003eHayward FD Heater Union O-Rings \u0026amp; Seals (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep filters and pump baskets clean—low flow can overheat heaters and stress exchanger components.\u003c\/li\u003e\n    \u003cli\u003eMaintain balanced water chemistry (especially pH, alkalinity, and calcium hardness) to reduce scaling and corrosion.\u003c\/li\u003e\n    \u003cli\u003eWinterize properly in freeze-prone areas by draining the heater completely to prevent cracked exchangers.\u003c\/li\u003e\n    \u003cli\u003eIf you see mineral trails or dampness under the heater, address it early—small leaks can become major damage quickly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938344252,"sku":"FDXLHXA1200","price":1049.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-heat-exchanger-assembly-fdxlhxa1200-heater-parts-8992617.jpg?v=1772790147"},{"product_id":"haywardheatexchangerassemblyh350fdfdxlhxa1350hppfdxlhxa1350","title":"Hayward Heat Exchanger Assembly-H350FD | FDXLHXA1350","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLHXA1350 Heat Exchanger Assembly for Universal H-Series Low NOx H350FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLHXA1350\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003eheat exchanger assembly\u003c\/strong\u003e designed for the\n    Hayward \u003cstrong\u003eUniversal H-Series Low NOx\u003c\/strong\u003e pool heater model \u003cstrong\u003eH350FD\u003c\/strong\u003e. This is the primary water-to-flame heat transfer\n    component inside the heater. It’s typically replaced when the existing exchanger is leaking, restricted by scale\/debris, or damaged from\n    freeze events, corrosive water chemistry, or long-term wear.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal H-Series Low NOx\u003c\/strong\u003e heater model: \u003cstrong\u003eH350FD\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePlumbing connection style commonly listed as \u003cstrong\u003e2\" x 2-1\/2\" CPVC union\u003c\/strong\u003e connections (heater-side union\/header interface)\u003c\/li\u003e\n    \u003cli\u003eDesigned as a direct OEM replacement where \u003cstrong\u003eFDXLHXA1350\u003c\/strong\u003e is specified on the parts diagram\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Reasons to Replace the Heat Exchanger\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWater leaking\u003c\/strong\u003e from inside the heater cabinet (especially during circulation or heating)\u003c\/li\u003e\n    \u003cli\u003eReduced heater performance due to \u003cstrong\u003escale buildup\u003c\/strong\u003e or internal restriction\u003c\/li\u003e\n    \u003cli\u003eExchanger damage from \u003cstrong\u003efreeze\u003c\/strong\u003e conditions\u003c\/li\u003e\n    \u003cli\u003eCorrosion or pitting from \u003cstrong\u003eaggressive water chemistry\u003c\/strong\u003e or improper balance\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) Complete \u003cstrong\u003eheat exchanger assembly\u003c\/strong\u003e (FDXLHXA1350)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLHXA1350\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eApplication: \u003cstrong\u003eHeat Exchanger Assembly\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eHeater Model: \u003cstrong\u003eH350FD\u003c\/strong\u003e (Universal H-Series Low NOx)\u003c\/li\u003e\n    \u003cli\u003eUPC: \u003cstrong\u003e610377073745\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eApprox. Weight (typical listing): \u003cstrong\u003e48.5 lb\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQualified service recommended:\u003c\/strong\u003e replacing a heat exchanger typically involves gas heater service and internal disassembly.\u003c\/li\u003e\n    \u003cli\u003eShut off \u003cstrong\u003epower\u003c\/strong\u003e and \u003cstrong\u003egas\u003c\/strong\u003e to the heater, relieve system pressure, and allow the unit to cool before service.\u003c\/li\u003e\n    \u003cli\u003eIf the original exchanger failed due to \u003cstrong\u003escale\u003c\/strong\u003e or low flow, correct the root cause (water balance, bypass, filter condition, pump flow) to prevent repeat failure.\u003c\/li\u003e\n    \u003cli\u003eInspect\/replace any disturbed \u003cstrong\u003eO-rings, gaskets, and unions\u003c\/strong\u003e during reassembly to ensure a leak-free seal.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLHXA1350\"\u003eHayward FDXLHXA1350 (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20H350FD%20parts\"\u003eHayward H350FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FD Heater Water Pressure Switch (FDXLWPS1930) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FD Heater Thermistor (FDXLTER1931) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLPRM1930\"\u003eHayward FD Return Manifold \/ Header Kit (FDXLPRM1930) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=heater%20union%20o-ring%20hayward%20FD\"\u003eHayward FD Heater Union O-Rings \u0026amp; Seals (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMaintain balanced water chemistry (especially \u003cstrong\u003epH\u003c\/strong\u003e, \u003cstrong\u003ealkalinity\u003c\/strong\u003e, and \u003cstrong\u003ecalcium hardness\u003c\/strong\u003e) to reduce scaling and corrosion inside the exchanger.\u003c\/li\u003e\n    \u003cli\u003eKeep filters and pump baskets clean—\u003cstrong\u003elow flow\u003c\/strong\u003e can overheat the heater and stress internal components.\u003c\/li\u003e\n    \u003cli\u003eIf the heater is installed in a freeze-prone area, properly \u003cstrong\u003ewinterize\u003c\/strong\u003e and drain the unit to prevent exchanger cracking.\u003c\/li\u003e\n    \u003cli\u003eAddress small leaks early—mineral buildup can damage sealing surfaces and lead to larger failures.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938377020,"sku":"FDXLHXA1350","price":1149.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-heat-exchanger-assembly-h350fd-fdxlhxa1350-heater-parts-5092346.jpg?v=1772790147"},{"product_id":"haywardhseriesfdheaterpolymerreturnmanifoldkitfdxlprm1930hppfdxlprm1930","title":"Hayward H-Series FD Heater Polymer Return Manifold Kit | FDXLPRM1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLPRM1930 Polymer Return Manifold Kit (Return Header) — Universal H-Series Low NOx FD \u0026amp; H-Series 135K\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLPRM1930\u003c\/strong\u003e is an OEM \u003cstrong\u003epolymer return manifold kit\u003c\/strong\u003e (often referred to as the\n    \u003cstrong\u003ereturn header\u003c\/strong\u003e) used on compatible Hayward heaters. This component mounts on the \u003cstrong\u003ereturn\/outlet side\u003c\/strong\u003e of the\n    heater’s water path and helps maintain proper flow through the heat exchanger while providing a stable sealing surface for header-related\n    connections.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHayward Universal H-Series Low NOx FD\u003c\/strong\u003e heaters:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHayward H-Series Above-Ground 135K\u003c\/strong\u003e induced draft heaters:\n      \u003cstrong\u003eH135ID1\u003c\/strong\u003e and \u003cstrong\u003eH135IDP1\u003c\/strong\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eFit tip:\u003c\/strong\u003e Heater parts can vary by model family and revision. Match your heater model from the data plate and confirm\n    \u003cstrong\u003eFDXLPRM1930\u003c\/strong\u003e is shown on your heater’s parts diagram before ordering.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eCommon Reasons to Replace\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCracked, warped, or damaged return header\/manifold\u003c\/li\u003e\n    \u003cli\u003eHeader-area leaks caused by worn sealing surfaces or damaged plastic body\u003c\/li\u003e\n    \u003cli\u003ePreventive replacement during header service when the original part is brittle or distorted\u003c\/li\u003e\n    \u003cli\u003eRepeated seepage\/mineral trails at the return header area after O-ring replacement\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e(1) Polymer return manifold \/ return header kit: \u003cstrong\u003eFDXLPRM1930\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e Depending on your heater model and revision, related seals\/O-rings and adjacent header hardware may be sold separately.\n    If you’re repairing a leak, inspect and replace any flattened or damaged O-rings during reassembly.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLPRM1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGTIN\/UPC: \u003cstrong\u003e610377309608\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e (also used on H-Series 135K above-ground induced draft models listed above)\u003c\/li\u003e\n    \u003cli\u003eReplacement Part Warranty: \u003cstrong\u003e6 months (parts only)\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eApprox. Shipping Weight: \u003cstrong\u003e6 lb\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eApprox. Shipping Dimensions: \u003cstrong\u003e9.5\" x 11.5\" x 12.5\"\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power to the heater at the breaker and shut down the pump before servicing.\u003c\/li\u003e\n    \u003cli\u003eRelieve system pressure and allow the heater to cool before opening the header area.\u003c\/li\u003e\n    \u003cli\u003eClean sealing surfaces and O-ring grooves thoroughly before installing the new manifold.\u003c\/li\u003e\n    \u003cli\u003eLightly lubricate O-rings with a \u003cstrong\u003esilicone-based\u003c\/strong\u003e pool lubricant to reduce pinching and improve sealing.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, restore flow and inspect carefully for leaks during the first run\/heat cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLPRM1930\"\u003eHayward FDXLPRM1930 (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FD Heater Water Pressure Switch (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FD Heater Thermistor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=heater%20union%20o-ring%20hayward\"\u003eHayward Heater Union O-Rings \u0026amp; Seals (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=silicone%20pool%20lube\"\u003eSilicone O-Ring \u0026amp; Gasket Lubricant (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMaintain proper flow: keep pump baskets and filters clean—low flow can stress heater header components.\u003c\/li\u003e\n    \u003cli\u003eKeep water chemistry balanced to reduce scaling and extend heater\/header life.\u003c\/li\u003e\n    \u003cli\u003eAddress small header leaks early—mineral buildup can damage sealing surfaces and worsen leaks over time.\u003c\/li\u003e\n    \u003cli\u003eSupport nearby plumbing so heater connections aren’t under constant stress from misaligned pipes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938409788,"sku":"FDXLPRM1930","price":60.99,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesfdheaterthermistorfdxlter1931hppfdxlter1931","title":"Hayward H-Series FD Heater Thermistor | FDXLTER1931","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLTER1931 Thermistor (Water Temperature Sensor) for Universal H-Series FD Heaters\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLTER1931\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003ethermistor (water temperature sensor)\u003c\/strong\u003e used on Hayward\n    \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. It measures water temperature and sends a signal to the heater control board\n    so the heater can regulate firing accurately and display correct temperature readings.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series FD heaters including:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso commonly referenced for \u003cstrong\u003eUniversal HC \/ HDF\u003c\/strong\u003e heater configurations (verify your exact model and parts diagram)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Symptoms of a Bad Thermistor\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDisplayed water temperature is inaccurate or jumps around\u003c\/li\u003e\n    \u003cli\u003eHeater short-cycles or won’t maintain set temperature\u003c\/li\u003e\n    \u003cli\u003eTemperature-related fault codes or intermittent shutdowns (after confirming proper flow)\u003c\/li\u003e\n    \u003cli\u003eCorroded sensor body or damaged wiring\/connector\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOEM Hayward replacement for correct signal compatibility and fit\u003c\/li\u003e\n    \u003cli\u003eRestores accurate water temperature sensing for stable heater operation\u003c\/li\u003e\n    \u003cli\u003eDesigned for in-ground pool heater applications\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: \u003cstrong\u003eFDXLTER1931\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts\u003c\/strong\u003e (Thermistor \/ Temperature Sensor)\u003c\/li\u003e\n    \u003cli\u003ePool Type: \u003cstrong\u003eIn-Ground\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eReplacement Part Warranty: \u003cstrong\u003e1-Year (Parts Only)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power\u003c\/strong\u003e to the heater at the breaker before servicing.\u003c\/li\u003e\n    \u003cli\u003eInspect the connector and wiring harness for corrosion or loose pins before installing the new sensor.\u003c\/li\u003e\n    \u003cli\u003eIf the heater still shows temperature issues after replacement, inspect water flow, bypass settings, and the control board input.\u003c\/li\u003e\n    \u003cli\u003eInstallation should be performed by a qualified technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1931\"\u003eHayward FDXLTER1931 Thermistor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Water Pressure Switch (FD Heaters) (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20H-Series%20FD%20heater%20parts\"\u003eHayward Universal H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20heater%20igniter%20hayward%20FD\"\u003eHayward FD Heater Igniters (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20heater%20flame%20sensor%20hayward%20FD\"\u003eHayward FD Heater Flame Sensors (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep the filter clean and valves fully open—flow issues can cause erratic heater behavior that looks like a sensor problem.\u003c\/li\u003e\n    \u003cli\u003eMaintain balanced water chemistry to reduce scale inside the heater, which can affect temperature control and efficiency.\u003c\/li\u003e\n    \u003cli\u003eInspect heater wiring connections seasonally for corrosion or loose terminals, especially in humid or coastal environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938442556,"sku":"FDXLTER1931","price":44.39,"currency_code":"USD","in_stock":false}]},{"product_id":"haywardhseriesfdheaterventpressureswitchfdxlvps1930hppfdxlvps1930","title":"Hayward H-Series FD Heater Vent Pressure Switch | FDXLVPS1930","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eHayward FDXLWPS1930 Water Pressure Switch for Universal H-Series FD Low NOx Heaters (FDXLVPS1930 \/ FDXLVPS1930 Reference)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    The Hayward \u003cstrong\u003eFDXLWPS1930\u003c\/strong\u003e is an OEM \u003cstrong\u003ewater pressure switch\u003c\/strong\u003e used on Hayward\n    \u003cstrong\u003eUniversal H-Series Low NOx “FD”\u003c\/strong\u003e pool heaters. This safety switch confirms there is adequate water flow\/pressure through\n    the heater before allowing it to fire. If water flow drops (dirty filter, closed valve, pump off, air in the system, etc.), the switch\n    helps prevent heater operation to protect internal components from overheating.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    \u003cstrong\u003eNote on part number:\u003c\/strong\u003e Many people reference this as \u003cstrong\u003eFDXLVPS1930\u003c\/strong\u003e, but the OEM part is commonly listed as\n    \u003cstrong\u003eFDXLWPS1930\u003c\/strong\u003e (pressure switch for FD heaters).\n  \u003c\/p\u003e\n\n  \u003ch3\u003eFits \/ Compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward \u003cstrong\u003eUniversal H-Series Low NOx FD\u003c\/strong\u003e heater models including:\n      \u003cstrong\u003eH150FDN\u003c\/strong\u003e, \u003cstrong\u003eH150FDP\u003c\/strong\u003e, \u003cstrong\u003eH200FDN\u003c\/strong\u003e, \u003cstrong\u003eH200FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH250FDN\u003c\/strong\u003e, \u003cstrong\u003eH250FDP\u003c\/strong\u003e, \u003cstrong\u003eH300FDN\u003c\/strong\u003e, \u003cstrong\u003eH300FDP\u003c\/strong\u003e,\n      \u003cstrong\u003eH350FDN\u003c\/strong\u003e, \u003cstrong\u003eH350FDP\u003c\/strong\u003e, \u003cstrong\u003eH400FDN\u003c\/strong\u003e, \u003cstrong\u003eH400FDP\u003c\/strong\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eAlso used on select \u003cstrong\u003eASME\/commercial FD\u003c\/strong\u003e heater configurations (verify heater model\/serial for exact match)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhat It Fixes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater won’t fire due to a failed or out-of-range pressure switch\u003c\/li\u003e\n    \u003cli\u003eIntermittent heat cycles caused by unstable switch contact\u003c\/li\u003e\n    \u003cli\u003eCorroded, leaking, or damaged switch discovered during service\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOEM Hayward replacement for reliable fit and correct safety operation\u003c\/li\u003e\n    \u003cli\u003eHelps prevent heater operation when water flow is insufficient\u003c\/li\u003e\n    \u003cli\u003eCritical safety component that protects the heat exchanger from low-flow overheating\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTurn off power\u003c\/strong\u003e to the heater at the breaker before servicing.\u003c\/li\u003e\n    \u003cli\u003eAlways troubleshoot the \u003cstrong\u003ecause of low flow\u003c\/strong\u003e first (dirty filter, clogged baskets, closed valves, bypass settings, air leaks).\u003c\/li\u003e\n    \u003cli\u003eIf your heater uses an adjustable pressure switch, adjust only per the heater service instructions after installation.\u003c\/li\u003e\n    \u003cli\u003eInstallation should be performed by a qualified technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecs (Quick Reference)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eOEM Part Number: \u003cstrong\u003eFDXLWPS1930\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePart Type: \u003cstrong\u003eHeater Parts\u003c\/strong\u003e (Water Pressure Switch)\u003c\/li\u003e\n    \u003cli\u003eTypical Use: \u003cstrong\u003eUniversal H-Series Low NOx FD Heaters\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eWarranty (typical OEM listing): \u003cstrong\u003e1-Year (Parts Only)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLWPS1930\"\u003eHayward FDXLWPS1930 Pressure Switch (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=FDXLTER1930\"\u003eHayward FDXLTER1930 Thermistor (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=Hayward%20H-Series%20FD%20heater%20parts\"\u003eHayward H-Series FD Heater Parts (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=pool%20filter%20pressure%20gauge\"\u003eFilter Pressure Gauges (search)\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=silicone%20pool%20lube\"\u003eSilicone O-Ring \u0026amp; Gasket Lubricant (search)\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eIf the heater trips on flow\/pressure, clean the pump basket and filter first—restricted flow is the most common cause.\u003c\/li\u003e\n    \u003cli\u003eKeep valves fully open and verify bypass settings after any plumbing changes.\u003c\/li\u003e\n    \u003cli\u003eMaintain balanced water chemistry to reduce scale inside the heater, which can restrict flow over time.\u003c\/li\u003e\n    \u003cli\u003eIf flow issues persist, inspect for suction-side air leaks (loose lids, cracked fittings) that can reduce pressure through the heater.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589938475324,"sku":"FDXLVPS1930","price":53.94,"currency_code":"USD","in_stock":true}]},{"product_id":"haywardhseriesheaterflamesensoridxlfls1930hppidxlfls1930","title":"Hayward H-Series Heater Flame Sensor | IDXLFLS1930","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch2\u003eHayward H-Series Flame Sensor IDXLFLS1930\u003c\/h2\u003e\n\u003cp\u003eThe Hayward IDXLFLS1930 Flame Sensor represents Hayward's commitment to safety, precision, and quality. As a part of the renowned H-Series, this flame sensor ensures efficient monitoring and reliable functioning of your heating systems.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Specifically designed for ASME Heaters, Low NOx Induced Draft, Universal Low NOx Heaters, IDL2, FD Series, and other Pool and Spa\/Hot Tub heaters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Detection:\u003c\/strong\u003e Effectively detects the flame presence, ensuring optimal and safe heater operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e Manufactured to Hayward's stringent quality standards, ensuring durability and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith the Hayward H-Series Flame Sensor, you can ensure your pool or spa heating system's safety and efficiency. Trust in Hayward's expertise and invest in the best for your pool or spa.\u003c\/p\u003e\n\u003cp\u003e\u003ca class=\"a-btn a-btn--text brochure-link\" href=\"https:\/\/hayward.com\/media\/akeneo_connector\/asset_files\/C\/u\/CuproNickelSellSheet_b2bc.pdf\" target=\"_blank\"\u003e\u003cspan class=\"a-btn--text-inner\"\u003e\u003cspan class=\"a-btn__label\"\u003eCupro Nickel Sell Sheet\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca class=\"a-btn a-btn--text brochure-link\" href=\"https:\/\/hayward.com\/media\/akeneo_connector\/asset_files\/L\/I\/LITUHS22C_Universal_HSeries_Brochure_Bilingual_d5bc.pdf\" target=\"_blank\"\u003e\u003cspan class=\"a-btn--text-inner\"\u003e\u003cspan class=\"a-btn__label\"\u003eUniversal H Series Brochure\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca class=\"a-btn a-btn--text brochure-link\" href=\"https:\/\/hayward.com\/media\/akeneo_connector\/asset_files\/U\/H\/UHS_IO_manual_2020_2316.pdf\" target=\"_blank\"\u003e\u003cspan class=\"a-btn--text-inner\"\u003e\u003cspan class=\"a-btn__label\"\u003eGas Heaters Installation \u0026amp; Operations Manual\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eSKU: IDXLFLS1930\u003c\/p\u003e\n\u003c!--split--\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589939294524,"sku":"IDXLFLS1930","price":62.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/products\/hayward-h-series-flame-sensor-idxlfls1930-cleaner-parts-529039.jpg?v=1703029892"},{"product_id":"hayward250knegativepressureindoorventadapteruhxnegvt12506hppuhxnegvt12506","title":"Hayward 250K Negative Pressure Indoor Vent Adapter | UHXNEGVT12506","description":"\u003cdiv\u003e\n  \u003ch2\u003eHayward UHXNEGVT12506 Negative Pressure Vertical Indoor Vent Adapter Kit, 6\" (H250FD)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Hayward \u003cstrong\u003eUHXNEGVT12506\u003c\/strong\u003e is a genuine \u003cstrong\u003enegative-pressure vertical indoor vent adapter kit\u003c\/strong\u003e\n    designed for the \u003cstrong\u003eHayward Universal H-Series H250FD\u003c\/strong\u003e Low NOx heater models (commonly referenced for\n    \u003cstrong\u003eH250FDN\u003c\/strong\u003e and \u003cstrong\u003eH250FDP\u003c\/strong\u003e). This kit provides the proper \u003cstrong\u003e6\" vent connection\u003c\/strong\u003e\n    for approved indoor vertical venting configurations where negative-pressure venting is required.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: UHXNEGVT12506\u003c\/li\u003e\n    \u003cli\u003eBrand: Hayward\u003c\/li\u003e\n    \u003cli\u003eType: Negative pressure vertical indoor vent adapter kit\u003c\/li\u003e\n    \u003cli\u003eVent Size: 6\" diameter\u003c\/li\u003e\n    \u003cli\u003eHeater Compatibility: Universal H-Series \u003cstrong\u003eH250FD\u003c\/strong\u003e (commonly H250FDN \/ H250FDP)\u003c\/li\u003e\n    \u003cli\u003eUse Case: Indoor vertical venting applications (negative pressure configuration)\u003c\/li\u003e\n    \u003cli\u003eCommon note: often listed as replacing older part \u003cstrong\u003eUHXNEGVT12501\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eImportant Venting Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned for \u003cstrong\u003evertical vent termination\u003c\/strong\u003e in approved indoor venting setups.\u003c\/li\u003e\n    \u003cli\u003eCommon guidance for indoor vertical venting includes termination a minimum of \u003cstrong\u003e3 ft above the roof\u003c\/strong\u003e and\n        \u003cstrong\u003e2 ft above\u003c\/strong\u003e any portion of a building within \u003cstrong\u003e10 ft horizontally\u003c\/strong\u003e (verify exact requirements in the current Hayward manual and local code).\u003c\/li\u003e\n    \u003cli\u003eThis kit is commonly noted as \u003cstrong\u003enot allowing horizontal vent termination\u003c\/strong\u003e; verify per current Hayward instructions for your exact installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eApplications\u003c\/h3\u003e\n  \u003cp\u003e\n    Used when converting or installing a compatible Hayward H250FD heater for approved indoor vertical venting where a\n    6\" negative-pressure vent adapter is required.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the exact heater model (H250FDN\/H250FDP) and required venting type before ordering.\u003c\/li\u003e\n    \u003cli\u003eVenting must follow Hayward installation instructions and all local codes.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is strongly recommended for gas heater venting components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=UHXNEGVT12506\"\u003eHayward UHXNEGVT12506\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20H250FD%20parts\"\u003eHayward H250FD Heater Parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20universal%20h%20vent%20kit\"\u003eHayward Universal H Vent Kits\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=UHXNEGVT14008\"\u003eHayward UHXNEGVT14008 (H400FD, 8\") Vent Adapter Kit\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20heater%20gasket\"\u003eHayward Heater Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20heater%20ignitor\"\u003eHayward Heater Ignition Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect vent connections and supports periodically for looseness, corrosion, or signs of leakage.\u003c\/li\u003e\n    \u003cli\u003eHave the heater and venting inspected during annual service, especially for indoor installations.\u003c\/li\u003e\n    \u003cli\u003eIf the heater shows vent\/pressure faults, check for restrictions, improper termination, or incorrect venting configuration before replacing parts.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589943488828,"sku":"UHXNEGVT12506","price":188.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-250k-negative-pressure-indoor-vent-adapter-uhxnegvt12506-heater-parts-3702218.jpg?v=1772135598"},{"product_id":"hayward400knegativepressureindoorventadapteruhxnegvt14008hppuhxnegvt14008","title":"Hayward 400K Negative Pressure Indoor Vent Adapter | UHXNEGVT14008","description":"\u003cdiv\u003e\n  \u003ch2\u003eHayward UHXNEGVT14008 Negative Pressure Vertical Indoor Vent Adapter Kit, 8\" (H400FD)\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Hayward \u003cstrong\u003eUHXNEGVT14008\u003c\/strong\u003e is a genuine \u003cstrong\u003enegative-pressure vertical indoor vent adapter kit\u003c\/strong\u003e\n    designed for \u003cstrong\u003eHayward Universal H-Series H400FD (FDN\/FDP) Low NOx heaters\u003c\/strong\u003e. It provides the proper\n    \u003cstrong\u003e8\" vent connection\u003c\/strong\u003e required for approved indoor (and certain covered outdoor) vertical venting installations\n    when the site requires negative-pressure venting configuration.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePart Number: UHXNEGVT14008\u003c\/li\u003e\n    \u003cli\u003eBrand: Hayward\u003c\/li\u003e\n    \u003cli\u003eType: Negative pressure vertical indoor vent adapter kit\u003c\/li\u003e\n    \u003cli\u003eVent Size: 8\" diameter adapter\u003c\/li\u003e\n    \u003cli\u003eHeater Compatibility: Hayward Universal H-Series \u003cstrong\u003eH400FD\u003c\/strong\u003e models (commonly listed for \u003cstrong\u003eH400FDN\u003c\/strong\u003e and \u003cstrong\u003eH400FDP\u003c\/strong\u003e)\u003c\/li\u003e\n    \u003cli\u003eUse Case: Indoor vertical venting (and certain covered outdoor venting situations when allowed by installation instructions)\u003c\/li\u003e\n    \u003cli\u003eGenuine Hayward replacement kit for correct fit and code-compliant installation (when installed per Hayward instructions)\u003c\/li\u003e\n    \u003cli\u003eCommon note: listed as replacing older kit \u003cstrong\u003eUHXNEGVT14001\u003c\/strong\u003e in many references\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eApplications\u003c\/h3\u003e\n  \u003cp\u003e\n    Used for approved venting configurations on compatible Hayward H400FD heaters where an \u003cstrong\u003e8\" negative-pressure vertical vent adapter\u003c\/strong\u003e\n    is required. Often used in commercial or in-ground installations that need a specific indoor venting setup.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the exact heater model (H400FDN\/H400FDP) and the required venting type before ordering.\u003c\/li\u003e\n    \u003cli\u003eVenting must follow Hayward installation instructions and local code requirements.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is strongly recommended for gas heater venting components.\u003c\/li\u003e\n    \u003cli\u003eInspect the venting path, clearances, and termination requirements during installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=UHXNEGVT14008\"\u003eHayward UHXNEGVT14008\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20H400FD%20parts\"\u003eHayward H400FD Heater Parts\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20universal%20h%20heater%20vent%20kit\"\u003eHayward Universal H Heater Vent Kits\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20heater%20gasket\"\u003eHayward Heater Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/search?q=hayward%20heater%20ignitor\"\u003eHayward Heater Ignition Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eInspect vent connections and supports periodically for looseness, corrosion, or signs of leakage.\u003c\/li\u003e\n    \u003cli\u003eKeep the heater area clear and maintain required clearances for safe combustion air and service access.\u003c\/li\u003e\n    \u003cli\u003eIf the heater shows vent\/pressure fault codes, verify venting configuration and restrictions before replacing parts.\u003c\/li\u003e\n    \u003cli\u003eHave venting inspected during annual heater service, especially on indoor installations.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52589943521596,"sku":"UHXNEGVT14008","price":213.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-400k-negative-pressure-indoor-vent-adapter-uhxnegvt14008-heater-parts-9046335.jpg?v=1772135597"},{"product_id":"hayward-blower-vacuum-switch-for-universal-h-series-low-nox-pool-heater-fdxlbvs1930","title":"Hayward Blower Vacuum Switch for Universal H-Series Low Nox Pool Heater FDXLBVS1930","description":"\u003cdiv\u003e\n  \u003ch2\u003eHayward FDXLBVS1930 Blower Vacuum Switch for Universal H-Series Low NOx Pool Heater\u003c\/h2\u003e\n\n  \u003cp\u003eThe Hayward FDXLBVS1930 Blower Vacuum Switch is a genuine replacement heater safety switch used on compatible Hayward Universal H-Series Low NOx pool and spa heaters. This switch helps verify blower vacuum \/ air switch operation during the heater ignition sequence.\u003c\/p\u003e\n\n  \u003cp\u003eThis replacement part is commonly used when troubleshooting blower vacuum switch faults, air switch closed conditions, air switch open conditions, or heater service codes related to blower operation and vacuum switch sensing.\u003c\/p\u003e\n\n  \u003ch3\u003eProduct Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eGenuine Hayward replacement heater part\u003c\/li\u003e\n    \u003cli\u003eManufacturer part number: FDXLBVS1930\u003c\/li\u003e\n    \u003cli\u003eBlower vacuum switch for compatible Hayward Universal H-Series Low NOx heaters\u003c\/li\u003e\n    \u003cli\u003eUsed in the heater blower \/ air proving safety circuit\u003c\/li\u003e\n    \u003cli\u003eCommonly referenced during AC and AO service code troubleshooting\u003c\/li\u003e\n    \u003cli\u003eReplacement part for select Hayward FD-Series heater applications\u003c\/li\u003e\n    \u003cli\u003eHelps confirm proper blower vacuum switch operation during heater startup\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProduct Details\u003c\/h3\u003e\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eHayward\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eFDXLBVS1930\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eBlower Vacuum Switch\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eHeater Series\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eUniversal H-Series Low NOx \/ FD-Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003ePool and spa gas heater blower vacuum safety circuit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e\u003cstrong\u003eCommon Use\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eReplacing a failed or out-of-range blower vacuum switch\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHayward Universal H-Series Low NOx heater models requiring FDXLBVS1930\u003c\/li\u003e\n    \u003cli\u003eCommonly used on H150FDN, H150FDP, H200FDN, H200FDP, H250FDN, H250FDP, H300FDN, H300FDP, H350FDN, H350FDP, H400FDN, and H400FDP applications where specified\u003c\/li\u003e\n    \u003cli\u003eSelect Hayward H500FD applications where the parts diagram calls for FDXLBVS1930\u003c\/li\u003e\n    \u003cli\u003eSelect Hayward H-Series above-ground 135K heater applications where specified\u003c\/li\u003e\n    \u003cli\u003eReplacement applications where the existing blower vacuum switch is marked FDXLBVS1930 or matches the heater parts diagram\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Signs This Part May Need Replacement\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHeater displays an AC air switch closed service code\u003c\/li\u003e\n    \u003cli\u003eHeater displays an AO blower \/ air switch service code after other causes are ruled out\u003c\/li\u003e\n    \u003cli\u003eBlower vacuum switch fails a continuity test during diagnosis\u003c\/li\u003e\n    \u003cli\u003eHeater blower runs but the control does not confirm proper vacuum switch operation\u003c\/li\u003e\n    \u003cli\u003eVacuum switch wiring, terminals, or switch body are damaged\u003c\/li\u003e\n    \u003cli\u003eHeater will not complete the ignition sequence due to blower vacuum switch fault diagnosis\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eImportant Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eThis item is the blower vacuum switch only.\u003c\/li\u003e\n    \u003cli\u003eBlower motor, vacuum tubing, integrated control board, wiring harness, thermistor, water pressure switch, ignitor, gas valve, and complete heater are sold separately unless otherwise stated.\u003c\/li\u003e\n    \u003cli\u003eVerify the exact heater model, serial range, and parts diagram before ordering.\u003c\/li\u003e\n    \u003cli\u003eThis is not the same part as the water pressure switch, vent pressure switch, high limit kit, thermistor, or blower assembly.\u003c\/li\u003e\n    \u003cli\u003eAC and AO service codes can be caused by wiring, blower, vacuum tubing, control board, voltage selector plug, venting, or airflow issues in addition to the vacuum switch.\u003c\/li\u003e\n    \u003cli\u003eReplacing the switch alone may not correct the issue if the blower, tubing, ICB, wiring, or venting is faulty.\u003c\/li\u003e\n    \u003cli\u003eGas heater diagnosis and repair should be performed by a qualified pool heater technician.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTurn off power to the heater before service.\u003c\/li\u003e\n    \u003cli\u003eShut off the gas supply before working inside the heater cabinet.\u003c\/li\u003e\n    \u003cli\u003eAllow the heater to cool completely before handling internal components.\u003c\/li\u003e\n    \u003cli\u003eLabel or photograph wiring connections before removing the old switch.\u003c\/li\u003e\n    \u003cli\u003eInspect the vacuum tubing for cracks, kinks, loose connections, water, debris, or damage.\u003c\/li\u003e\n    \u003cli\u003eInspect blower wiring and switch terminals before installing the replacement part.\u003c\/li\u003e\n    \u003cli\u003eDo not bypass the blower vacuum switch or any heater safety device.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, confirm proper heater startup, blower operation, and service-code clearance.\u003c\/li\u003e\n    \u003cli\u003eIf the same service code returns, continue diagnosis using the Hayward heater troubleshooting guide.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eRelated Products\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/hayward-blower-vacuum-switch-for-universal-h-series-low-nox-pool-heater-fdxlbvs1930\"\u003eHayward FDXLBVS1930 Blower Vacuum Switch\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/h-series-thermistor-fdxlter1930-lv\"\u003eHayward FDXLTER1930 H-Series Thermistor\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/h-series-high-limit-kit-fdxlhli1930-lv\"\u003eHayward FDXLHLI1930 H-Series High Limit Kit\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/hayward-h-series-water-pressure-switch\"\u003eHayward FDXLWPS1930 H-Series Water Pressure Switch\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/haywardhseriesheatertransformer120240v24vacidxl2trf1930hppidxl2trf1930\"\u003eHayward IDXL2TRF1930 H-Series Heater Transformer\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/haywardhseriesheaterflamesensoridxlfls1930hppidxlfls1930\"\u003eHayward IDXLFLS1930 H-Series Heater Flame Sensor\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/haywardbezelkeypadassemblykitfdxlbkp1930hppfdxlbkp1930\"\u003eHayward FDXLBKP1930 Bezel \u0026amp; Keypad Assembly Kit\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"https:\/\/aquapoolsupply.com\/products\/haywardhseriespoolheateronoffswitchchxtsw1930hppchxtsw1930\"\u003eHayward CHXTSW1930 H-Series On\/Off Switch\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eMaintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eKeep heater vents, blower intake areas, and surrounding equipment pad clear of debris.\u003c\/li\u003e\n    \u003cli\u003eInspect wiring and tubing during routine heater service.\u003c\/li\u003e\n    \u003cli\u003eDo not ignore recurring AC, AO, IF, or other service codes.\u003c\/li\u003e\n    \u003cli\u003eMaintain proper gas supply, electrical voltage, water flow, and ventilation for reliable heater operation.\u003c\/li\u003e\n    \u003cli\u003eHave heater safety circuits tested by a qualified technician when fault codes repeat.\u003c\/li\u003e\n    \u003cli\u003eAddress water leaks, rodent damage, corrosion, or loose wiring inside the heater cabinet promptly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":52697321701692,"sku":"FDXLBVS1930","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/files\/hayward-blower-vacuum-switch-for-universal-h-series-low-nox-pool-heater-fdxlbvs1930-heater-parts-2390867.jpg?v=1769856193"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/3280\/9276\/collections\/hayward-universal-h-series-low-nox-heater-parts-diagram.png?v=1790638213","url":"https:\/\/aquapoolsupply.com\/collections\/parts-list-hayward-universal-h-series-low-nox-heater.oembed","provider":"Aqua Pool Supply","version":"1.0","type":"link"}