OEM Carrier Furnace Transformer 120V to 24V 40VA — HT01CN001 for Model UPFLOW150U6020A

This OEM Carrier transformer (part number HT01CN001) is the factory-specified control circuit transformer for the Carrier UPFLOW150U6020A upflow gas furnace. The transformer steps down 120V line voltage to a safe 24V (with a 12V tap) for the low-voltage control circuit that powers the thermostat, control board logic, and all system relays. When this transformer fails — typically due to an electrical surge, a short circuit in the control wiring, or normal wear — the entire control system loses power. Symptoms include a completely unresponsive thermostat, a system that won't activate on demand, or a buzzing/humming sound from the transformer location in the furnace cabinet.

• Specs: 120V primary | 24V/12V dual secondary | 40VA capacity | Factory-matched windings and VA rating | OEM part number HT01CN001 | Replaces superseded part numbers HT01BJ115, 19EA41612, 19EA42612
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances for the Carrier UPFLOW150U6020A control board. Generic or undersized substitutes can undervolt the control circuit, cause nuisance lockouts, and void equipment warranties.
• Install difficulty: 3/5 — Shut off all power to the furnace at the disconnect and breaker before beginning. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-installation), wire labels or tape. Always photograph existing wiring before disconnecting. The transformer mounts inside the furnace cabinet; ensure primary and secondary leads are reconnected to the correct terminals.
• Warranty: 1-year OEM factory warranty on this Carrier-authorized part. Ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier UPFLOW150U6020A upflow furnace. Verify your unit's data plate shows the HT01CN001 part number or one of the superseded numbers before ordering. Not sure? Our HVAC parts specialists verify fitment before your order ships — call or chat today.