OEM Carrier 60VA Control Transformer HT01AW229 for Model PH10JA02400GAHAA

This OEM Carrier control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH10JA02400GAHAA. The transformer steps line voltage (115/208/230V primary) down to the 24V used by the system's control circuit — powering the thermostat, contactor coils, gas valve, and all low-voltage safety controls. When this transformer fails, the entire control circuit goes dead: the thermostat gets no power, the system won't call for heating or cooling, and nothing responds. It is a foot-mounted, 60VA rated unit with a multi-tap primary to accommodate varying supply voltages.

• Specs: 60VA rating | Primary: 115 / 208 / 230V AC | Secondary: 24V AC | Foot-mount configuration | OEM part number HT01AW229 (also supersedes HT01AW229A)
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — wound and insulated to exact factory specifications. Generic transformers often use lower-grade core laminations and thinner windings, increasing the risk of thermal failure and nuisance tripping under peak load conditions.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Verify your supply voltage matches the correct primary tap before energizing.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PH10JA02400GAHAA. Confirm your unit's supply voltage (115V, 208V, or 230V) matches one of the primary taps before ordering. If your system is showing a completely dead thermostat or unresponsive controls, this transformer should be tested first with a multimeter before replacement. Questions about fitment? Our HVAC parts specialists verify compatibility before every order — reach out before you buy.