OEM Carrier Transformer 40VA 120V–24V for Model PG9MAA036060ABKA

This OEM Carrier transformer (part number HT01BC116) is the factory-specified replacement for the Carrier PG9MAA036060ABKA gas furnace. The transformer steps line voltage down from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, control board, gas valve coil, and inducer relay. When this component fails, the entire control circuit goes dead: your thermostat shows no response, nothing calls for heat, and the furnace won't attempt a start cycle at all.

• Specs: Input 120V AC | Output 24V AC | 40VA rating | Ring-terminal or quick-connect leads | Factory-matched impedance for PG9MAA036060ABKA control circuit
• OEM vs Generic: OEM transformers from Carrier are wound to exact VA and impedance specifications, ensuring stable 24V output under full control-circuit load. Generic units can sag under load, causing erratic board behavior, nuisance lockouts, or premature control board failure.
• Install Difficulty: 2/5 — Shut off the disconnect and confirm zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, nut driver, multimeter. Photograph existing wiring connections before removal to ensure correct reinstallation.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PG9MAA036060ABKA 80% AFUE gas furnace. Always verify your existing transformer's input/output voltage and VA rating against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — same day.