OEM Carrier Transformer 40VA 120V to 24V for Model GA1AAD060150ACJA

This is the factory OEM replacement transformer (part# HT01BC116) for the Carrier GA1AAD060150ACJA gas furnace. The transformer steps down line voltage from 120V to 24V to power the entire low-voltage control circuit — including the thermostat, control board, gas valve, and relay coils. When this component fails, absolutely nothing in the system responds: the thermostat goes dark, the inducer never starts, and the furnace appears completely dead. A blown fuse on the control board or a shorted low-voltage wire is often the root cause, so always inspect the secondary circuit before condemning the transformer.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Factory-matched electrical characteristics for full compatibility
• OEM vs Generic: This OEM transformer is wound to Carrier's exact VA rating and insulation class. Undersized or off-tolerance aftermarket units can overheat, trip thermal cutoffs prematurely, or fail to sustain 24V under full load — causing intermittent lockouts and difficult-to-diagnose faults.
• Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after install). Note wire colors and terminal positions before disconnecting. Inspect secondary circuit for shorts prior to energizing the new transformer.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our warehouse.

Compatibility: Designed specifically for the Carrier GA1AAD060150ACJA gas furnace. Verify primary and secondary voltage ratings on your existing transformer's label before ordering to confirm fitment. Have questions about your model? Our HVAC parts specialists confirm fitment before your order ships — no guesswork required.