OEM Carrier 40VA Transformer HT01CN001 for Model UPFLOW180UAHAC14B

This OEM control circuit transformer is the factory-specified replacement for the Carrier UPFLOW180UAHAC14B upflow gas furnace. The transformer steps down 120V line voltage to the 24V signal voltage required to power the thermostat, control board, gas valve, and all low-voltage safety circuits. When this component fails, the entire control system goes dark — the thermostat becomes unresponsive, the furnace will not attempt ignition, and no error codes are displayed because the board itself has no power.

• Specs: Input 120V AC | Output 24V AC | 40 VA rating | Factory-matched OEM part number HT01CN001 | Designed to Carrier tolerance specifications
• OEM vs Generic: OEM transformers use the exact VA rating, insulation class, and mounting footprint specified at the factory. Undersized or generic transformers can sag under load, causing erratic thermostat behavior, nuisance board lockouts, or premature failure of the gas valve coil.
• Install difficulty: 2/5 — Always shut off power at the breaker and confirm voltage is zero before proceeding. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Photograph all wiring connections before disconnecting. Reconnect low-voltage wiring securely to avoid future loose-connection faults.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day when ordered before cutoff.

Compatibility: Engineered specifically for the Carrier UPFLOW180UAHAC14B upflow furnace configuration. Confirm your unit's data plate lists 120V primary / 24V secondary transformer specification before ordering. Our fitment team is available to verify compatibility prior to purchase — reach out before you order to eliminate any guesswork.