When troubleshooting furnace short cycling or blower fan issues

Key Benefits: Broad Compatibility: Direct fit for Lochinvar Copper-Fin

check your model's control code to ensure it matches the 3H0339700003 requirements

maximizing the efficiency of older R-22 infrastructure while minimizing the risk of system hunting or freeze-ups

Common Questions: What does the orange dot on the 65W63 represent

Amana-Goodman 0257F00172S Heat Exchanger R-410A When troubleshooting furnace short cyclingThe Amana Goodman 0257F00172S Heat Exchanger is an official OEM component meticulously engineered to maintain the safety and efficiency of your furnace heating system. As a critical 3 cell gas furnace part, this assembly facilitates the vital transfer of thermal energy from combustion gases to your home's airflow while ensuring hazardous exhaust remains contained. This genuine HVAC replacement is the direct successor to discontinued part numbers