{"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","url":"https:\/\/aquapoolsupply.com\/products\/haywardheatexchangerassemblyfdxlhxa1200hppfdxlhxa1200","provider":"Aqua Pool Supply","version":"1.0","type":"link"}