OEM Carrier 40VA Control Transformer P201-35150 for Model UPFLOW100FAUAC14A

This OEM control transformer (part number P201-35150) is the factory-specified replacement for the Carrier UPFLOW100FAUAC14A upflow gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers the thermostat, control board, gas valve, and all low-voltage safety circuits. When it fails, the entire control circuit goes dark — your thermostat goes blank, the furnace ignores calls for heat, and nothing responds. Replacing it with the correct OEM part restores full system operation immediately.

• Specs: 40VA rating | 120V primary / 24V secondary | Factory-matched wire leads | Designed for continuous duty in enclosed furnace cabinets
• OEM vs Generic: This is the factory-original Carrier transformer engineered to exact VA and voltage tolerances for the UPFLOW100FAUAC14A. Generic transformers often run undersized VA ratings, causing chronic overloads, nuisance trips, and premature control board failure.
• Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label or photograph existing wiring connections before removal. Verify 24V output at secondary leads with a multimeter after install.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier UPFLOW100FAUAC14A upflow gas furnace. Always verify the 40VA rating and 120V/24V configuration on your unit's data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment before you buy — no guesswork required.