OEM Carrier 40VA Control Transformer HT01BC116 for Model PG8JAA048070ABJA

This OEM control transformer is the factory-specified replacement for the Carrier PG8JAA048070ABJA gas furnace. The transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, gas valve, and control board. When it fails, absolutely nothing in the system responds: no thermostat display, no ignition attempt, no inducer startup. It's one of the first components to check when a furnace appears completely dead.

• Specs: 40VA rating | 120V primary | 24V secondary | OEM Part Number HT01BC116 | Factory-matched fit and terminal configuration
• OEM vs Generic: This is a genuine OEM Carrier transformer, manufactured to exact VA rating and insulation class tolerances. Generic transformers frequently run under-rated, leading to premature burnout when the control circuit draws peak load during startup.
• 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 confirm 24V output after install). Label or photograph all wire connections before removal.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model PG8JAA048070ABJA packaged gas furnace units. Always verify existing transformer VA rating and wire terminal layout against your unit's data plate prior to ordering. Need fitment confirmation? Our HVAC parts specialists are available to verify compatibility before you buy — same-day shipping on all in-stock orders.