OEM Carrier 50VA Control Transformer P201-35150 for Model UPFLOW120FAUHC12A

This OEM control transformer is the factory-specified replacement for the Carrier UPFLOW120FAUHC12A upflow gas furnace. The transformer steps down incoming line voltage (120/208/240 VAC) to a safe 24V signal that powers your furnace's control board, thermostat circuit, and all low-voltage safety controls. When this transformer fails, the entire control circuit goes dark — resulting in a completely unresponsive thermostat, a blank control board, or a furnace that won't attempt ignition at all.

• Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | Single phase | 60 Hz | CSA listed | Factory part number P201-35150
• OEM vs Generic: This is a genuine Carrier/Totaline OEM part, engineered to exact VA rating and impedance tolerances. Under-rated or off-spec generic transformers can cause nuisance tripping, control board damage, or premature failure — especially in multi-stage or communicating furnace systems.
• Install difficulty: 2/5 — Shut off all power (line voltage AND 24V circuit) before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Always label low-voltage wires before disconnecting. Verify primary tap setting matches your supply voltage before energizing.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier UPFLOW120FAUHC12A upflow gas furnace. Verify your existing transformer's VA rating and primary/secondary voltage on the data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any doubts.