OEM Carrier Control Transformer 60VA 115/208/230V Primary 24V Secondary for Model PH13NR018000AHAA

This OEM Carrier control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH13NR018000AHAA heat pump. The transformer steps down the 115/208/230V line-voltage supply to the 24V AC signal required by the thermostat, contactor coil, reversing valve solenoid, and all low-voltage safety controls. When this transformer fails, the entire 24V control circuit goes dead — your thermostat will be unresponsive, the system will not heat or cool, and nothing will energize regardless of thermostat setting. A blown fuse on the secondary side is a common indicator; the transformer itself may also fail from a short in the control wiring or age-related winding degradation.

• Specs: 60 VA power rating | 115/208/230V AC primary (multi-tap) | 24V AC secondary | 50/60 Hz | Foot-mount configuration | Factory-matched to Carrier PH13NR018000AHAA wiring harness
• OEM vs Generic: This is a genuine Factory Authorized Parts (FAP) OEM transformer wound to exact Carrier voltage and VA tolerances. Generic replacements frequently run at reduced VA capacity, causing premature overload trips and nuisance lockouts under high-demand control circuit conditions.
• Install difficulty: 2/5 — Shut off power at the disconnect before beginning. Tools needed: multimeter (to confirm 24V output after install), flathead and Phillips screwdrivers, wire stripper, needle-nose pliers. Label all low-voltage wires before disconnecting. Verify primary tap selection (115V or 208/230V) matches your unit's supply voltage before energizing.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PH13NR018000AHAA heat pump. Cross-references include HT01AW229A. Always verify your unit's supply voltage and confirm the 60 VA rating on your existing transformer's data label before ordering. Our team is available to verify fitment — just reach out before you buy. Order now and get same-day shipping!