OEM Carrier 40VA Control Transformer HT01BC116 for Model PG9MAA060100AEKA

This is the factory OEM replacement control transformer for the Carrier PG9MAA060100AEKA gas furnace. The transformer's critical job is to step down line-voltage (120V) to the 24V AC signal that powers your thermostat, control board, gas valve, and every other low-voltage component in the system. When it fails, absolutely nothing in the control circuit responds — the thermostat goes blank, the furnace won't call for heat, and the system appears completely dead. A blown transformer is often caused by a short in the 24V circuit, so always check for downstream wiring faults before installing the new unit.

• Specs: 40VA rated | 120V primary / 24V secondary | Direct OEM replacement | Part number HT01BC116 | Factory-matched output tolerance for reliable low-voltage control
• OEM vs Generic: This OEM unit is wound to Carrier's exact VA and voltage specifications. Generic transformers often under-deliver on VA capacity, causing nuisance tripping, premature burnout, or erratic control board behavior — especially under load.
• Install Difficulty: 2/5 — Disconnect power at the breaker and confirm zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all wiring connections before removal. Inspect the secondary (24V) circuit for shorts before energizing the new transformer.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PG9MAA060100AEKA gas furnace. Verify your existing transformer's VA rating and primary/secondary voltages on the data plate or existing unit label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before your order ships.