Hayward Universal H-Series Propane Gas Heater 400,000 BTUs, Low NOx | W3H400FDP
Hayward Products
SKU: W3H400FDP
Hayward Universal H-Series Propane Gas Heater 400,000 BTUs, Low NOx | W3H400FDP
The 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.
Equipped 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.
The 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.
- Model: W3H400FDP
- Fuel Type: Liquid Propane Gas
- Heating Capacity: 400,000 BTUs
- Heat Exchanger: Cupro nickel for superior salt water and chemical corrosion resistance
- Exclusive “Totally Managed” water flow design for uniform heat transfer
- Patented header by-pass design improves efficiency and reduces pump run-time
- Energy Savings: Up to 18% by lowering pump operation times
- Electrical Requirements: 120V / 240V
- Amperage: 5.5 amps
- Minimum Flow Rate: 20 gallons per minute
- Plumbing Connections: 2" x 2-1/2" CPVC union fittings
- Low NOx emissions compliant with strict clean air quality standards
- Ideal for large residential and commercial pool and spa applications
SKU: W3H400FDP
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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