OEM Carrier Control Transformer 40VA 120V to 24V for Model N6A48NG482020

This is the factory OEM replacement control transformer (part number HT01BC116) for the Carrier N6A48NG482020 packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required to power the thermostat, control board, contactor coil, and all low-voltage control circuits. When this transformer fails, the entire control system goes dark — the thermostat shows no power, the system won't respond to any calls for heating or cooling, and you may measure zero volts on the secondary side of the transformer.

• Specs: 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BC116 | Factory-matched to Carrier N6A48NG482020 control circuit requirements
• OEM vs Generic: OEM transformers are wound and potted to exact VA and thermal specifications for your unit. Undersized or off-spec generic transformers can overheat, trip the internal fuse repeatedly, or fail prematurely under full low-voltage load — especially when multiple accessories share the 24V circuit.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 0V at primary terminals before touching wiring. Always label or photograph wire connections prior to removal.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier N6A48NG482020 packaged unit. Always verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or wiring diagram before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you purchase — no guesswork required.