OEM Carrier Control Transformer 60VA 115/208/230V — 24V Secondary for Model PH13NB018000AAAA

This is the factory-authorized OEM replacement control transformer for the Carrier PH13NB018000AAAA heat pump system. The transformer steps down high-voltage line power (115, 208, or 230V primary) to the 24V AC signal that powers your control board, thermostat wiring, and all low-voltage system components. When this transformer fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system won't start, and you may find a tripped low-voltage fuse or blown secondary. Replacing this OEM unit restores the full 60VA of clean, stable control voltage the system was designed to operate on.

• Specs: 60 VA 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 genuine Carrier Factory Authorized Part (FAP). OEM transformers are wound to exact VA and voltage specifications, protecting sensitive control boards from undervoltage and transient spikes. Generic alternatives may have looser tolerances, risking premature board failure.
• Install difficulty: 3/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper, and needle-nose pliers. Label all 24V secondary wires before disconnecting. Verify primary tap connection matches your supply voltage — incorrect tap selection is the most common installation error.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Direct OEM fit for Carrier model PH13NB018000AAAA. Cross-references include HT01AW229A and Totaline/RCD equivalents. Always verify supply voltage and VA rating against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today. In stock and ships today.