OEM Carrier 40VA Control Transformer P201-35150 for Model UPFLOW080FAUHC12A

This OEM replacement control transformer is the factory-specified unit for the Carrier UPFLOW080FAUHC12A upflow gas furnace. The transformer steps line voltage (120V) down to 24V AC to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When it fails, nothing in the system responds: the thermostat goes blank, the furnace won't call for heat, and no status codes appear on the board. A failed transformer is often the last thing homeowners check, but it's one of the fastest fixes when confirmed with a multimeter.

• Specs: 120V primary input | 24V AC secondary output | 40VA rating | Designed to factory OEM specification for the UPFLOW080FAUHC12A platform
• OEM vs Generic: This OEM transformer is wound to exact VA and voltage tolerances required by the Carrier UPFLOW080FAUHC12A control board. Generic transformers with loose VA tolerances can under-deliver during peak load, causing intermittent brownouts of the control circuit and nuisance lockouts.
• Install Difficulty: 2/5 — Disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label wires before removal — primary and secondary terminals must not be swapped.
• Warranty: 1-year OEM factory warranty against defects. Orders placed by 3PM local time ship same business day from our warehouse.

Compatibility: Engineered for the Carrier UPFLOW080FAUHC12A upflow gas furnace. Always verify your existing transformer's primary voltage (120V), secondary voltage (24V), and VA rating against your unit's data plate before ordering. Not sure it fits? Our HVAC parts team confirms fitment before you buy — reach out before ordering.