OEM Carrier Furnace Transformer 120V/24V 40VA for Model PG9YAA060100ACSS

This is the factory-specified OEM replacement transformer (Part # HT01BC117 / HT01BC117A, Basler Electric BE161840GDD) for the Carrier PG9YAA060100ACSS packaged gas furnace. The control transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, gas valve, inducer relay, and every other low-voltage control in the system. When this transformer fails, the furnace goes completely dead — the thermostat shows no response, the inducer never energizes, and no fault codes appear because there is no 24V power to run the control board at all. A failed transformer is often misdiagnosed as a bad board; always verify 24V output at the transformer secondary before condemning more expensive components.

• Specs: 120V primary / 24V secondary | 40VA rated | 60Hz | Foot-mount configuration | Cross-references: HT01BC117A, BE161840GDD, HT680056 (superseding part)
• OEM vs Generic: This OEM unit is wound to exact factory VA and voltage tolerances. Undersized aftermarket transformers (common in bargain units) can overheat and fail within a single heating season, leaving your control board under-volted and vulnerable to erratic operation.
• Install difficulty: 2/5 — Shut off power at the disconnect before starting. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 24V output after install), and needle-nose pliers for spade terminals. Label or photograph all 24V wiring before disconnecting. Typical install time: 20–30 minutes.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PG9YAA060100ACSS packaged gas furnace. Also fits select PG9YAA, PG9YAB, PG9MTAV, 58HDV, and 58HDX series models — verify your unit's data plate and existing transformer specs (120V/24V, 40VA) before ordering. Not sure it fits? Contact our parts team and we'll confirm fitment before you buy. Order now and we'll ship today.