OEM Carrier Control Transformer 40VA 120V/24V for Model GB1AAV024065AEJA

This OEM replacement control transformer (part# HT01BC116) is the factory-specified unit for the Carrier GB1AAV024065AEJA gas furnace. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including your thermostat, gas valve, and control board. When it fails, absolutely nothing works: the thermostat goes blank, the furnace won't respond to any call for heat or cooling, and you may measure zero volts at the 24V secondary terminals. A blown transformer is often the first suspect when the entire control system goes silent.

• Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Factory-matched insulation class and thermal protection
• OEM vs Generic: OEM transformers are wound to exact VA and voltage specifications for the Carrier GB1AAV024065AEJA control board's load requirements. Undersized or off-spec generic units can overheat, trip thermal cutoffs prematurely, or fail to sustain voltage under full control-circuit load — leaving you chasing a ghost fault.
• Install difficulty: 2/5 — Disconnect power at the breaker and confirm zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all wiring connections before removal. The transformer mounts to the blower deck or vestibule panel with two screws; wire connections use spade or screw terminals.
• Warranty: 1-year OEM factory warranty. Ships same business day from our climate-controlled warehouse when ordered before 3 PM local time.

Compatibility: Designed specifically for the Carrier GB1AAV024065AEJA gas furnace. Always verify your existing transformer's VA rating and primary/secondary voltages on the data plate before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you purchase — no guesswork required. Order today and get your control circuit back online fast.