OEM Carrier Furnace Control Transformer 40VA 120V-24V for Model PG8DAA036095ACJA

This OEM control transformer is the factory-specified replacement for the Carrier PG8DAA036095ACJA gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and every other low-voltage component in the system. When it fails, the furnace goes completely silent — the thermostat appears dead, the inducer never starts, and no fault codes display because the control board itself has lost power. Replacing this transformer is often the fastest way to restore a fully non-responsive furnace.

• Specs: 40VA rating | 120V primary | 24V secondary | 50/60 Hz single-phase | OEM part number HT01BC116 (current replacement: HT680054)
• OEM vs Generic: OEM transformers are wound and potted to Carrier's exact VA and impedance specifications. Undersized or off-tolerance aftermarket units can trip on thermal overload, produce voltage sag under load, or damage sensitive control boards over time.
• Install difficulty: 2/5 — Always shut off the 120V disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (verify 24V output after install), wire nuts or quick-connect terminals. Photograph existing wiring before removal. Typical install time: 20–30 minutes.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Engineered for Carrier model PG8DAA036095ACJA gas furnace. Also replaces legacy Carrier/Bryant/Payne transformer part numbers including HT01BC116, HT01BC115, HT01BB126, HT01CT120, HT01BC120, and HT01AW115. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your heat back today.