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This OEM control transformer is the factory-specified replacement for the Carrier UPFLOW080UAAC14 upflow gas furnace. The transformer steps down incoming line voltage (120/208/240V AC) to a safe 24V AC signal that powers your control board, thermostat, and all low-voltage control circuits. When the transformer fails, the entire control circuit loses power — symptoms include a completely unresponsive thermostat, a furnace that won't ignite, or a system that shows no signs of life despite the breaker being on. Replacing the transformer is one of the most cost-effective repairs on any Carrier furnace.
Compatibility: Direct OEM replacement for Carrier model UPFLOW080UAAC14. Verify your existing transformer's VA rating and primary/secondary voltages on the data plate before ordering — swapping a 40VA unit for this 50VA part is a safe upgrade; going down in VA is not. Questions about fitment? Our HVAC parts team confirms compatibility before you order — ships same day.