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This OEM control transformer is the factory-specified replacement for the Carrier UPFLOW080FAUHC12 upflow gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage safety circuits. When it fails, the entire control circuit goes dark — your thermostat shows a blank screen, the furnace won't respond to any call for heat, and no diagnostic fault codes will display because the board itself has lost power.
Compatibility: Engineered as a direct OEM drop-in replacement for the Carrier UPFLOW080FAUHC12 upflow gas furnace. Always verify your unit's data plate voltage requirements match before ordering. Our fitment specialists are available to confirm compatibility before you buy — order with confidence and get back to comfort fast.