OEM Carrier Control Transformer 60VA 115/208/230V for Model PH13NR01800GAKAA

This is the factory-authorized OEM control transformer for the Carrier PH13NR01800GAKAA packaged heat pump unit. Part number HT01AW229 steps line voltage down from 115, 208, or 230V primary to a 24V secondary signal used to power the control board, thermostat circuit, and all low-voltage relay logic. When this transformer fails, the entire control circuit goes dead — the thermostat shows no response, no relays click, and the system will not heat, cool, or run in any mode. A failed transformer is often mistaken for a bad thermostat or control board; always verify 24V output at the secondary terminals before replacing more expensive components.

• Specs: 60 VA rating | Primary voltage: 115 / 208 / 230 VAC | Secondary voltage: 24 VAC | Foot-mounted form factor | OEM part number HT01AW229 / HT01AW229A
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM transformers are wound to exact VA capacity and insulation class, preventing thermal overload under full control-circuit load. Generic transformers often run at reduced VA margins, causing nuisance trips or early failure.
• Install difficulty: 2/5 — Shut off power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 0V before touching wires and 24V after install). Label or photograph all wiring connections before removing the old transformer. Secure foot-mount screws firmly to prevent vibration fatigue.
• Warranty: 1-year OEM factory warranty against manufacturing defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PH13NR01800GAKAA packaged heat pump units. Cross-references include HT01AW229A. Verify primary voltage matches your unit's supply voltage (115V, 208V, or 230V) before ordering. Have your model number and data plate handy — our team is available to confirm fitment before you buy.