OEM Carrier Control Transformer 60VA 115/208/230V for Model PH13NB04800GAAAA

This is the factory-specified OEM control transformer for the Carrier PH13NB04800GAAAA heat pump system. The transformer steps down line voltage (115/208/230V primary) to the 24V AC signal that powers your thermostat circuit, control board, contactor coil, and all low-voltage safety controls. When it fails, the entire control circuit goes dead — the thermostat displays nothing, the system won't respond to calls for heating or cooling, and no components energize. A failed transformer is often misdiagnosed as a bad control board, making correct identification critical before replacing more expensive components.

• Specs: 60 VA rating | Primary voltage: 115/208/230V AC | Secondary voltage: 24V AC | Foot-mounted configuration | OEM part number HT01AW229 | Factory Authorized Parts designation
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part. OEM transformers are wound to exact VA and voltage tolerances, protecting sensitive control boards from under/over-voltage. Generic replacements often use lower-grade core materials, leading to premature thermal failure and potential downstream board damage.
• Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label or photograph all low-voltage wiring connections before removal. Always check for a shorted low-voltage wire that may have caused the original failure — replacing the transformer without clearing the short will blow the new unit immediately.
• 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 PH13NB04800GAAAA. Verify your unit's data plate shows a 115/208/230V primary and 24V secondary control circuit before ordering. Cross-reference part number HT01AW229 or suffix variant HT01AW229A for confirmed fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you order — reach out before you buy.