OEM Carrier 50VA Control Transformer 120/240V–24V for Model UPFLOW150UA14A

This OEM control transformer (part #P201-35150) is the factory-specified replacement for the Carrier UPFLOW150UA14A upflow gas furnace. Its job is to step down high-voltage line power (120/208/240 VAC) to the safe low-voltage levels (12/24V) required by your system's control board, thermostat, and other 24V control-circuit components. When this transformer fails, the entire low-voltage control circuit loses power — resulting in a completely unresponsive thermostat, a furnace that won't fire, or a tripped fuse on the control board. It is often the first component to inspect when nothing in the system responds at all.

• Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24V | Single phase | 60 Hz | CSA listed | Factory part #P201-35150
• OEM vs Generic: This OEM transformer is wound to exact factory tolerances, ensuring the correct output voltage under full load. Undersized or off-spec generic transformers can overheat, blow control fuses, or cause erratic board behavior — making OEM the safer long-term investment.
• Install difficulty: 2/5 — Disconnect power to the furnace at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always label or photograph wiring connections before removal.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier UPFLOW150UA14A upflow gas furnace. Verify your existing transformer's VA rating and primary/secondary voltages on the data plate or wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists are available to verify compatibility before you buy — order with confidence and get it shipped today.