OEM Carrier Control Transformer 60VA 115/208/230V — HT01AW229 for Model PH13NA018000ABAA

This is the factory-authorized OEM control transformer for the Carrier PH13NA018000ABAA packaged heat pump unit. Part number HT01AW229 is a foot-mounted, multi-tap primary transformer rated at 60VA with primary voltages of 115, 208, and 230VAC and a 24V secondary output. The 24V control circuit it powers is the nerve center of your system — it energizes the thermostat, contactor coil, reversing valve, and safety controls. When this transformer fails, the result is typically a completely unresponsive system: no thermostat display response, no contactor pull-in, and no heating or cooling at all. A blown fuse on the control board is often the first sign of a failing transformer before total failure occurs.

• Specs: 60VA capacity | Primary: 115/208/230VAC multi-tap | Secondary: 24VAC | Foot-mounted design | OEM part number HT01AW229 / HT01AW229A
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, wound to exact OEM VA ratings and insulation class. Generic transformers often run underrated VA capacity, which causes nuisance tripping of the onboard fuse under normal system load and shortens service life significantly.
• Install difficulty: 2/5 — Always disconnect power at the breaker and confirm zero voltage before handling. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring before disconnecting leads. Tap selection must match your line voltage — incorrect tap selection will damage downstream controls.
• Warranty: 1-year OEM factory warranty against defects. In-stock — ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier PH13NA018000ABAA packaged heat pump units. Also cross-references to part number HT01AW229A. Verify your line voltage and confirm the existing transformer's VA and voltage ratings against your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence from NationalHVACParts.com.