OEM Carrier Control Transformer 60VA 115/208/230V — Model PH13NR04200GAKAA

This is the genuine OEM factory-authorized replacement control transformer for the Carrier PH13NR04200GAKAA packaged heat pump unit. Part number HT01AW229, this foot-mounted 60VA transformer steps down the 115/208/230V line voltage to the 24V signal required to power the entire control circuit — including the thermostat, contactor coil, and safety boards. When this transformer fails, the result is total system lockout: no cooling, no heating, and no thermostat response. A blown fuse on the secondary side or a shorted 24V circuit are the most common causes of transformer failure.

• Specs: 60 VA rating | Primary voltage: 115/208/230V AC | Secondary voltage: 24V AC | Foot-mounted design | Factory part number HT01AW229 (supersedes HT01AW229A)
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — wound to exact VA and impedance specifications. Off-brand transformers frequently run hot, trip thermal cutoffs prematurely, or fail to sustain 24V under load, causing nuisance lockouts and repeated service calls.
• Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output after install). Always check for a shorted 24V circuit before installing a new transformer — replacing the transformer without clearing the short will immediately destroy the new unit.
• Warranty: 1-year OEM factory warranty on parts and materials. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Verified direct fit for Carrier model PH13NR04200GAKAA. Confirm your unit's data plate voltage matches the 115/208/230V primary specification before ordering. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence and get back up and running today.