OEM Carrier 40VA Control Transformer HT01CN001 for Model UPFLOW150FAUHAC14B

This OEM control transformer is the factory-specified replacement for the Carrier UPFLOW150FAUHAC14B upflow gas furnace. The transformer steps down line voltage (120V) to the 24V AC signal required to power the control board, thermostat circuit, gas valve, and all low-voltage safety controls. When it fails, the entire control circuit goes dead — the thermostat loses communication, the furnace will not attempt ignition, and nothing responds. A failed transformer is often misdiagnosed as a control board failure, making this an essential first diagnostic replacement.

• Specs: 40VA rated | 120V primary / 24V secondary | OEM part number HT01CN001 | Factory-matched construction for Carrier UPFLOW150FAUHAC14B
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the factory control board. Undersized or off-tolerance generic units can cause nuisance tripping, board brownouts, and shortened component life across the entire low-voltage circuit.
• Install difficulty: 2/5 — Disconnect power at the breaker and confirm zero voltage before handling. Tools needed: flathead and Phillips screwdrivers, wire nuts or quick-connect terminals, and a multimeter to verify 24V output after installation. Label all wires before disconnecting.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered and factory-matched for the Carrier UPFLOW150FAUHAC14B upflow gas furnace. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions.