OEM Carrier Furnace Transformer 120V/24V 40VA for Model PG9MTAV60100ABSS

This OEM control transformer (part # HT01BC117, superseded by HT680056) is the factory-specified replacement for the Carrier PG9MTAV60100ABSS gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage control circuits. When it fails, nothing works — the furnace will be completely unresponsive with no thermostat communication, no inducer startup, and no error codes displayed.

• Specs: 120V primary | 24V secondary | 40VA rated | Foot-mount configuration | Basler Electric BE161840GDD equivalent | OEM part # HT01BC117 (current supersession: HT680056)
• OEM vs Generic: OEM transformers are wound to exact VA and voltage-regulation tolerances required by Carrier's IFC control board. Undersized or off-tolerance aftermarket units can cause nuisance lockouts, erratic thermostat behavior, or premature control board failure.
• Install difficulty: 2/5 — Turn off power at the disconnect and breaker before touching any wiring. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label all low-voltage wires before disconnecting. A typical technician completes this swap in under 20 minutes.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Directly fits Carrier model PG9MTAV60100ABSS and related PG9MTAV / PG9YAA series furnaces. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping available on all in-stock orders.