OEM Carrier Control Transformer 60VA 115/208/230V–24V for Model PH13PB048000AAAA

This is the factory-authorized OEM control transformer (part number HT01AW229) for the Carrier PH13PB048000AAAA heat pump system. The control transformer steps down the 115/208/230V line voltage to a safe 24VAC signal that powers your thermostat, contactor coils, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dark — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no safety controls can operate. It is typically one of the first components to diagnose when nothing works at all.

• Specs: 60VA power rating | 115/208/230V AC primary | 24V AC secondary | 50/60 Hz | Foot-mount configuration | Factory-matched to Carrier PH13PB048000AAAA
• OEM vs Generic: OEM transformers from Carrier are wound to exact VA and voltage tolerances. Undersized or off-tolerance generic transformers can overheat, trip the internal fuse prematurely, or deliver insufficient voltage to hold contactors closed — causing nuisance lockouts and premature control board failures.
• Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching terminals). Label and photograph all low-voltage wiring before disconnecting. Swap leads one-for-one and restore power to verify 24VAC output before buttoning up the panel.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for the Carrier PH13PB048000AAAA heat pump. Cross-references include HT01AW229A. Also used across select Bryant and Payne platforms with 115/208/230V–24V 60VA transformer requirements. Always verify the primary voltage, secondary voltage, and VA rating on your unit's data plate or wiring diagram before ordering. Have a fitment question? Our HVAC parts specialists are available to confirm compatibility before you buy — reach out today and we'll ship the same business day.