Hayward H400FD Heat Exchanger (FDXLHXA1400) tools A properly selected overlay helps

A properly selected overlay helps support cleaner function recognition and contributes to a more polished finished panel

Useful when the original body is cracked or internally worn

this part helps maintain consistent operation while reducing the risk of leaks

plumbing unions

Helps capture debris and support cleaner water

Hayward H400FD Heat Exchanger (FDXLHXA1400) tools A properly selected overlay helpsThe Hayward heat exchanger is designed for compatible H400FD heater applications where powerful, dependable heat transfer is needed. A heat exchanger is useful because it carries the main responsibility for transferring heat into the water, directly affecting how well the heater performs overall. This replacement is especially useful when the original exchanger is leaking, corroded, scaled, cracked, or losing efficiency over time. Replacing it can