OEM Carrier Control Transformer 60VA 115/208/230V — 24V Secondary for Model PH13NB036000AAAA

This is the OEM factory-specified control transformer (part number HT01AW229) for the Carrier PH13NB036000AAAA heat pump system. The transformer steps down line voltage (115, 208, or 230V AC primary) to a safe 24V AC secondary signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and any safety switches. When this transformer fails, nothing works: the thermostat goes dark, the system is completely unresponsive, and a multimeter on the secondary will read 0V instead of the expected 24V. A blown transformer is often the result of a wiring short or a failed contactor coil drawing excess current — always identify and correct the root cause before installing the replacement.

• Specs: 60 VA power rating | Primary voltage: 115 / 208 / 230 VAC (multi-tap) | Secondary voltage: 24 VAC | Frequency: 50/60 Hz | Foot-mounted configuration | OEM part number: HT01AW229 / HT01AW229A
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM transformers are wound to exact VA and voltage tolerances for the PH13NB036000AAAA's control circuit demand. Undersized or off-tolerance generic units can overheat, trip thermal protection, or cause nuisance lockouts under peak control-circuit load.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire stripper, multimeter. Label and photograph all low-voltage wiring before disconnecting. Verify 24V output with a multimeter before closing the panel.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PH13NB036000AAAA heat pump. Also cross-references as HT01AW229A. Verify your unit's data plate primary voltage tap requirement (115V, 208V, or 230V) before wiring. If you have any questions about fitment, our HVAC parts specialists are available to confirm compatibility before you order — don't guess on a control circuit component.