OEM Carrier Furnace Control Transformer 120V/24V 40VA for Model PG9MAA060080AEKA

This OEM Carrier control transformer (part# HT01BC116 / successor HT680054) is the factory-specified step-down transformer for the Carrier PG9MAA060080AEKA gas furnace. It converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this transformer fails, the result is immediate and total: the thermostat goes dark, the furnace locks out, and nothing responds. No clicks, no ignition attempt, no blower — the system is completely dead.

• Specs: 120V primary | 24V secondary | 40VA rated | Step-down class-2 transformer | Wire lead connections | Direct OEM replacement for HT01BC116 (current successor: HT680054)
• OEM vs Generic: OEM transformers are wound to exact factory VA and voltage tolerances, protecting sensitive downstream components like the IFC control board. Generic units can run undervoltage under load, causing intermittent lockouts and premature board failure.
• Install difficulty: 2/5 — Shut off power at the breaker and confirm voltage is absent before disconnecting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring before removal. Verify 24V output at C and R terminals on the control board after install.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Engineered for Carrier model PG9MAA060080AEKA gas furnace. Cross-references: HT01BC116, HT01BC116B, HT01BC115, HT01BC120, HT01BB126, HT680054, and additional Carrier/Bryant/Payne part numbers. Always verify primary voltage (120V) and VA rating (40VA) on your unit's data plate before ordering. Our team is available to confirm fitment before you buy.