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This OEM Carrier control transformer (part# HT01BC117) is the factory-specified replacement for the PG9MTAV36075ABSS gas furnace. The transformer steps down line voltage from 120V AC to 24V AC to power the furnace's low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this component fails, the entire control circuit goes dead: the thermostat shows no response, the furnace does not attempt ignition, and nothing operates. It is often one of the first components to inspect when a furnace appears completely unresponsive.
Compatibility: Engineered as a direct OEM replacement for the Carrier PG9MTAV36075ABSS gas furnace. Always verify your unit's data plate voltage and VA rating before ordering to ensure a correct match. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your furnace back online fast.