OEM Carrier 40VA Control Transformer HT01CN001 for Model UPFLOW180FAUHAC14B

This OEM step-down transformer (part number HT01CN001) is the factory-specified replacement for the Carrier UPFLOW180FAUHAC14B upflow gas furnace. The transformer steps line voltage (120V) down to 24V AC to power the low-voltage control circuit — including the thermostat, control board, gas valve, and safety switches. When the transformer fails, the entire control circuit loses power, resulting in a completely unresponsive system: no thermostat display, no inducer start, and no ignition sequence.

• Specs: Input: 120V AC | Output: 24V AC | Rating: 40VA | Factory-matched OEM tolerance | Plug-in or hardwire mount
• OEM vs Generic: This is the exact Carrier-engineered transformer, matched to the UPFLOW180FAUHAC14B's control board load requirements. Generic transformers can vary in VA output and insulation class, increasing the risk of nuisance tripping or premature failure under full load.
• Install Difficulty: 2/5 — Shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 24V output after installation), and wire nuts or spade terminals as required. Always label wires before disconnecting.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier UPFLOW180FAUHAC14B upflow gas furnace. Verify your existing transformer's input/output voltage and VA rating on its data label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork required.