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Hayward Heat Exchanger Assembly for H400FD
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Product Description
⌄The Hayward FDXLHXA1400 is the heat exchanger assembly for the H400FD Universal H-Series Low NOx pool and spa heater. It is the genuine Hayward replacement, supplied as a complete assembly so it drops in where the original came out.
What it does
The heat exchanger is the heart of a gas heater. Pool water passes through it while the burner heats it from below, and everything the heater does depends on that transfer working. When an exchanger scales up, corrodes or starts to leak, the symptoms show up as poor heating, water in the cabinet or tripped safeties, and the fix is a new assembly.
Fit
This assembly is specific to the H400FD. The other sizes in the Universal H-Series, H150FD through H350FD, use their own exchangers, so confirm the model on your heater's rating plate before ordering. If the plate reads H400FD, this is the part.