OEM Carrier Furnace Control Transformer 120V–24V 40VA for Model PG9MAA048060AAKA

This OEM control transformer is the factory-specified replacement for the Carrier PG9MAA048060AAKA gas furnace. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer, and control board. When the transformer fails, the furnace goes completely silent: the thermostat goes blank, no ignition sequence initiates, and nothing responds to a call for heat. A shorted low-voltage component (bad gas valve, wiring fault) is a common root cause of transformer burnout, so always check the secondary circuit before installing the replacement.

• Specs: Primary 120V AC | Secondary 24V AC | 40VA rated | Class 2 step-down transformer | Direct OEM replacement for HT01BC116 (superseded by HT680054)
• OEM vs Generic: This OEM unit is wound and insulated to Carrier's exact factory specification, ensuring precise 24V output and correct VA headroom for the full low-voltage load. Generic transformers frequently run at marginal VA ratings, risking thermal overload and repeat failures.
• Install difficulty: 2/5 — Cut power at the breaker and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 24V output on secondary after install). Photograph all wiring connections before disconnecting. Inspect secondary wiring for shorts before energizing.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PG9MAA048060AAKA gas furnace. Note: OEM part number HT01BC116 has been superseded by HT680054 — both are the same 120V–24V 40VA transformer. Verify your existing transformer's primary/secondary voltage and VA rating on its label before ordering. Our fitment team is available to confirm compatibility prior to purchase.