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Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU
Hayward W3H400FDN Universal H-Series 400,000 BTU

Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas

Product ID : 42330771
4.1 out of 5 stars


Galleon Product ID 42330771
UPC / ISBN 610377387255
Shipping Weight 207 lbs
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Model W3H400FDN
Manufacturer Hayward
Shipping Dimension 39.49 x 32.01 x 25.98 inches
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Hayward W3H400FDN Universal H-Series 400,000 BTU Features

  • The Hayward Universal H-Series 400,000 BTU Natural Gas Heater delivers premium heating performance for years of reliable, long-lasting comfort

  • A durable cupro nickel heat exchanger offers exceptional protection against corrosion and premature failure caused by unbalanced water chemistry

  • Industry-leading hydraulic design reduces circulation pump run time to provide major energy savings

  • Front-panel-only access and intuitive control pad provide easy operation, service and maintenance

  • Low NOx emissions meet air quality standards in all low-NOx areas, ensuring low environmental impact


About Hayward W3H400FDN Universal H-Series 400,000 BTU

The Universal H-Series 400,000 BTU Natural Gas Pool & Spa Heater from Hayward provides reliable, long-lasting comfort for pools and spas with a surface area up to 1,200 ft. Built with a durable cupro nickel heat exchanger, it offers exceptional protection against corrosion and premature failure caused by unbalanced water chemistry, ensuring you get season after season of premium heating performance. The Universal H-Series boasts industry-leading hydraulic performance coupled with lightning-fast speed-to-heat capability—so you spend less time waiting, and more time swimming. Its low NOx emissions meet air quality standards in all low-NOx areas, so you can rest easy knowing its environmental impact is low, too.