OEM Carrier Control Transformer 60VA 115/208/230V — HT01AW229 for Model PH13NR01800GAFAA

This is the factory OEM replacement control transformer for the Carrier PH13NR01800GAFAA packaged heat pump unit. The transformer steps down the 115/208/230V line voltage to the 24V AC required by the control circuit — powering the thermostat, contactor coils, and control board. When this transformer fails, the entire low-voltage control circuit goes dead: the thermostat becomes unresponsive, the system won't energize, and no heating or cooling function is available. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.

• Specs: 60VA capacity | Primary: 115/208/230V | Secondary: 24V AC | Foot-mounted design | OEM Part # HT01AW229 (also referenced as HT01AW229A)
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — engineered to exact VA and voltage specifications for the PH13NR01800GAFAA. Generic transformers may fall short on VA output under full load, causing nuisance lockouts and premature failure of connected boards and coils.
• Install difficulty: 2/5 — De-energize the unit and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper, and electrical tape or wire nuts. Photograph all wire connections before removal. Confirm correct voltage tap selection (115V, 208V, or 230V) before powering back up.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NR01800GAFAA. Verify your unit's supply voltage (115V, 208V, or 230V) and ensure you select the correct primary tap during installation. Cross-references include HT01AW229A. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you order — contact us today.