OEM Carrier 50VA Control Transformer 120/240–24V for Model UPFLOW150UAHAC14A

This factory-original step-down transformer is the exact OEM replacement for the Carrier UPFLOW150UAHAC14A upflow air handler. The transformer converts high-voltage line power (120/208/240 VAC) down to the safe 24V control-circuit voltage required by your thermostat, control board, relay coils, and other low-voltage components. When this transformer fails, the entire control circuit loses power — you'll see a blank thermostat display, no response to heating or cooling calls, or a blown fuse on the control board with no apparent cause. Replacing it with the genuine OEM part (P201-35150) restores exact factory voltage regulation and protects all downstream electronics.

• Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | Single phase | 60 Hz | CSA listed | Round foot-mount housing
• OEM vs Generic: OEM transformers are wound to exact factory VA and voltage tolerances, ensuring stable 24V output under load. Off-brand units often run high secondary voltage, which can damage control boards and shorten thermostat life.
• Install difficulty: 2/5 — Shut off all power at the breaker and disconnect switch before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removal. Verify secondary output voltage (should read ~24–28V) after installation before restoring the system to operation.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier UPFLOW150UAHAC14A upflow air handler. Always verify your unit's control circuit voltage requirements match the 120/208/240 VAC primary and 24 VAC secondary specs before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork required.