OEM Carrier Control Transformer 60VA 115/208/230V — Model PH13NB03100GAAAA

This is the genuine OEM factory-authorized replacement control transformer for the Carrier PH13NB03100GAAAA packaged heat pump unit. Part number HT01AW229 is a foot-mounted, multi-tap primary transformer rated at 60VA with primary voltage options of 115V, 208V, or 230V and a 24V secondary output. The transformer steps down line voltage to the 24V control circuit that powers your thermostat, contactor coil, reversing valve, and all low-voltage safety controls. When this transformer fails — due to a shorted control board, wiring fault, or age — the entire low-voltage control circuit goes dead: the thermostat goes blank, the unit will not respond to any calls for heating or cooling, and no contactor pull-in occurs.

• Specs: 60VA | Primary: 115V / 208V / 230V multi-tap | Secondary: 24V AC | Foot-mounted configuration | OEM Part # HT01AW229 / HT01AW229A
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part built to exact VA and voltage tolerances. Off-brand transformers often use undersized cores that overheat under full 60VA load, leading to repeat failures and potential damage to downstream boards.
• Install difficulty: 2/5 — De-energize the unit at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire stripper, and a multimeter to verify 24V output after installation. Confirm correct primary tap wire connection (115V, 208V, or 230V) matches your supply voltage before powering up.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier PH13NB03100GAAAA packaged heat pump units. Always verify your unit's supply voltage and confirm part number HT01AW229 against your unit's wiring diagram or data plate before ordering. Our technical team is available to confirm fitment prior to purchase — call or chat today and we'll get your unit back online fast.