OEM Carrier Control Transformer 50VA 120/240-24V for Model UPFLOW100UAAC14A

This is the genuine OEM step-down control transformer for the Carrier UPFLOW100UAAC14A air handler. The transformer converts incoming line voltage (120/208/240 VAC) to a safe 24 VAC output that powers the low-voltage control circuit — including the thermostat, control board, and all 24V relay coils. When this transformer fails, the entire control circuit loses power: the thermostat goes blank, the system won't respond to any call for heating or cooling, and in some cases a blown fuse on the control board is a secondary symptom of transformer burnout.

• Specs: 50 VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | 60 Hz | Single phase | CSA Listed | OEM Part # P201-35150
• OEM vs Generic: This is the factory-authorized OEM part manufactured to exact Carrier specifications. Generic 50VA transformers may have looser voltage tolerances, inferior core lamination, and non-CSA listings — all of which risk nuisance tripping or early failure of downstream control boards.
• Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Note wire colors and terminal positions before disconnecting. This is a direct swap replacement.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as the factory replacement for the Carrier UPFLOW100UAAC14A air handler. Verify your unit's data plate shows a 50VA / 120-240V primary / 24V secondary transformer requirement before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.