OEM Carrier 40VA Control Transformer HT01BC116 for Model PG8JAA024045ADJA

This OEM control transformer is the factory-specified replacement for the Carrier PG8JAA024045ADJA gas furnace. The transformer steps down 120V line voltage to the 24V AC that powers your furnace's control board, thermostat circuit, and safety relays. When this component fails, the entire low-voltage control system goes dark — your thermostat won't respond, the furnace won't ignite, and no diagnostic codes will display. It is one of the most overlooked root causes of a completely unresponsive system.

• Specs: 120V primary input | 24V secondary output | 40VA rated | Direct OEM replacement for part number HT01BC116 | Factory-matched lead configuration
• OEM vs Generic: This OEM unit is wound and encapsulated to Carrier's exact VA and impedance tolerances. Generic transformers rated at nominal 40VA can sag under load, causing intermittent lockouts, nuisance tripping of limit switches, and premature control board failure.
• Install difficulty: 2/5 — Turn off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 24V output after install). Note wire colors or photograph connections before removing the old unit.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8JAA024045ADJA gas furnace. Always confirm the part number printed on the transformer body matches HT01BC116 before ordering. If you need fitment verification, our HVAC parts specialists are available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders.