OEM Carrier Control Transformer 60VA 115/208/230V-24V for Model PH13NB03000GAAAA

This OEM control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH13NB03000GAAAA packaged heat pump unit. The transformer steps down the 115/208/230V line voltage to a safe 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and safety switches. When this transformer fails, the result is a completely unresponsive system: no thermostat display, no contactor pull-in, and no operation whatsoever. A failed transformer is often misdiagnosed as a bad control board, making correct identification critical before ordering downstream components.

• Specs: 60 VA power rating | Primary voltage: 115/208/230V AC | Secondary voltage: 24V AC | 50/60 Hz | Foot-mounted configuration | Factory-matched OEM tolerances
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part (HT01AW229). OEM transformers are wound and insulated to exact VA and thermal ratings for this unit. Generic substitutes frequently run hot under full VA load, tripping internal thermal fuses and shortening service life.
• Install difficulty: 2/5 — Always disconnect power at the disconnect box before beginning. Tools needed: multimeter (verify 24V output after install), flathead and Phillips screwdrivers, wire stripper. Label and photograph all wiring before disconnecting. Check for a tripped fuse or shorted wire on the secondary side before installing the replacement — an unresolved short will blow the new transformer immediately.
• Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NB03000GAAAA packaged heat pump. Also cross-references as HT01AW229A. Verify your unit's data plate voltage configuration before ordering to confirm primary voltage tap. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your system back online fast.