OEM Carrier 40VA Control Transformer HT01BC116 for Model PG8JAA048135ADJA

This OEM control transformer is the factory-specified replacement part for the Carrier PG8JAA048135ADJA packaged gas furnace unit. The transformer steps down line voltage from 120V to the 24V signal required by the thermostat, control board, gas valve, and all other low-voltage control circuit components. When this part fails, the entire control circuit goes dead — the thermostat loses power, the system stops responding, and no heating or cooling cycle can be initiated. It is one of the first components to inspect when the system shows zero control response.

• Specs: 120V primary input → 24V secondary output | 40VA rated | OEM part number HT01BC116 | Factory plug-and-play wiring configuration | UL-listed construction
• OEM vs Generic: This is a genuine Carrier OEM transformer manufactured to exact factory VA ratings and insulation class. Generic transformers often under-deliver on VA capacity, causing voltage sag under load, nuisance lockouts, and premature failure of downstream control components.
• Install Difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph existing wiring connections before removal. Always confirm power is off at both the breaker and the unit disconnect switch.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PG8JAA048135ADJA packaged gas furnace. Cross-reference OEM part number HT01BC116 against your unit's data plate and wiring diagram before ordering. If you need fitment verification, our HVAC parts specialists are available to confirm compatibility before you buy — reach out before placing your order.