OEM Carrier Control Transformer 40VA 120V/24V for Model UPFLOW125UA14A

This OEM control transformer (part number P201-35150) is the factory-specified replacement for the Carrier UPFLOW125UA14A upflow gas furnace. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this component fails, the entire control system goes dark: the thermostat loses power, the furnace won't respond to any call for heat, and no status LEDs illuminate on the control board.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory OEM replacement for part number P201-35150 | Designed for Carrier upflow furnace applications
• OEM vs Generic: This is the genuine OEM Carrier transformer, wound and tested to exact factory VA and voltage specifications. Generic transformers often run outside ±5% voltage tolerance, which can damage sensitive control boards and void furnace warranties.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Always verify 24V output with a multimeter before re-energizing the control circuit. Photograph all wiring connections prior to removal.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier UPFLOW125UA14A upflow gas furnace. Always confirm the transformer's VA rating and primary/secondary voltages match your unit's data plate before ordering. Our fitment team is available to verify compatibility before you purchase — same-day shipping on all stocked parts.