OEM Carrier Control Transformer 60VA 115/208/230V–24V for Model PH13NB04800GABAA

This OEM control transformer is the factory-specified replacement for the Carrier PH13NB04800GABAA heat pump system. The transformer steps down line voltage (115, 208, or 230V primary) to the 24V AC signal that powers your thermostat, contactor coil, control board, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system refuses to respond to any call for heating or cooling, and you may blow a 24V fuse repeatedly. If your unit shows zero response despite power being present at the disconnect, a failed transformer is one of the first components to test.

• Specs: 60VA power rating | 115/208/230V AC primary (multi-tap) | 24V AC secondary | 50/60 Hz | Foot-mount configuration | OEM part number HT01AW229
• OEM vs Generic: This is a Factory Authorized Parts (FAP) OEM unit built to Carrier's exact VA rating and insulation class. Generic transformers may be under-rated in VA, causing thermal overload and premature failure under full control-circuit load — especially on systems with zone boards or electronic air cleaners drawing additional VA.
• Install difficulty: 2/5 — Always disconnect power at the breaker and outdoor disconnect before working on any transformer. Tools needed: multimeter, flathead and Phillips screwdrivers, wire nuts or terminal connectors. Verify primary tap wiring matches your actual line voltage (208V vs. 230V) before energizing. Photograph all wire connections before disconnecting.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PH13NB04800GABAA packaged heat pump unit. The multi-tap primary (115/208/230V) makes this transformer suitable across a range of Carrier, Bryant, and Payne platforms — always confirm the VA rating and mounting style against your unit's data plate before ordering. Our fitment team is available to verify compatibility before you buy.