OEM Carrier 40VA Control Transformer HT01BC116 for Model PG9MAB060080AASA

This OEM control circuit transformer is the factory-specified replacement for the Carrier PG9MAB060080AASA gas furnace. Its primary function is to step down line voltage from 120V AC to 24V AC, powering the low-voltage control circuit that operates the thermostat, gas valve, inducer, and all safety controls. When this transformer fails, the entire control circuit loses power — resulting in a completely unresponsive furnace with no thermostat communication, no ignition sequence, and no error codes displayed.

• Specs: 40VA output rating | 120V primary / 24V secondary | OEM part number HT01BC116 | Factory-matched form, fit, and function for direct drop-in replacement
• OEM vs Generic: This OEM transformer is wound to Carrier's exact impedance and VA specifications, ensuring reliable 24V output under full control-circuit load. Generic aftermarket transformers frequently under-deliver VA capacity, causing nuisance tripping of the fuse or erratic low-voltage behavior.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Label all wiring connections before disconnecting the old transformer.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PG9MAB060080AASA 80% AFUE gas furnace. Always verify the OEM part number on the data plate or existing transformer label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork required.