Raypak
Raypak 004674F Exchanger Heat-Only F-405
Raypak 004674F Exchanger Heat-Only F-405
Raypak 004674F Exchanger Heat-Only F-405
If your F-405 heater is still firing but not transferring heat effectively, or you are finding internal moisture, leakage, or scale in the exchanger section, the heat exchanger is one of the first major assemblies to inspect. This is a direct repair point when a Raypak heater is not working at full output because the core heat-transfer section is failing.
This heat-only exchanger is used in the Raypak F-405 heater to transfer combustion heat into the circulating water. When the exchanger becomes restricted, worn, or starts leaking internally, the heater can still fire but will struggle to deliver usable heat. Replacing it restores the core water-side path where the heater actually does its heating work.
- Heater fires but water temperature rises slowly
- Internal leaks or moisture buildup appear in the exchanger section
- Scale or corrosion is found during teardown
- Raypak heater troubleshooting points to exchanger inefficiency
What this part does: It transfers combustion heat into circulating water through the heater exchanger section.
Compatibility: Designed for the Raypak F-405 heat-only application. Confirm with your model number before ordering.
- Part Number: 004674F
- Type: Exchanger
- Application: F-405 heat-only
OEM Value: A genuine Raypak replacement part helps maintain correct fit within the header system and water path. Major exchanger repairs work best when the replacement matches the original heater configuration exactly.
