Hayward FDXLHXA1400 Heat Exchanger | H400FD Heaters

OEM Hayward Heat Exchanger Assembly FDXLHXA1400 is specifically designed for use with the H400FD Universal H-Series Low NOx pool heater, providing efficient thermal transfer to support optimal heating performance. This vital component maximizes energy conversion from combustion to water temperature, improving both system efficiency and output. Constructed from durable, corrosion-resistant materials, it withstands the demanding conditions of pool environments, including constant exposure to heat and treated water. Whether for regular servicing or critical repairs, this heat exchanger helps preserve long-term heater functionality and reliability.

Highlights

• Designed for H400FD Heaters: OEM component ensures direct fit and reliable integration within Hayward H-Series Low NOx heating systems

• Supports Efficient Heat Transfer: Enables effective thermal exchange for improved heating output and reduced energy use

• Durable, Pool-Grade Construction: Built from corrosion-resistant materials to endure water chemistry and high-temperature cycling

• Key to Heater Maintenance and Repair: Essential replacement part for restoring full performance during service or system breakdown

• Promotes Long-Term Reliability: Helps maintain smooth and safe heater operation under continuous use in residential and commercial pools

Compatibility

• Hayward Universal H-Series Low NOX Pool Heater Model H400FD

Additional Info

Identifying Efficiency Loss in Heater

h400fd taking longer to heat pool replace exchanger

reduced heat transfer points to core damage

heater running but water not getting hot

how to tell if heat exchanger is failing in h400fd

energy bill rising check heat exchanger condition

Specs and Local Pricing Info

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specs on exchanger tubes and flow rate capacity

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Confirming Model Match Before Buying

fdxlhxa1400 fits hayward universal h400fd heater

match heater serial to correct heat exchanger kit

compatible with both propane and natural gas models

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Diagram