OEM Carrier 40VA Control Transformer for Model HP13NR02400GAKAA

This OEM control transformer (part number HT01AW229) is the factory-specified replacement for the Carrier HP13NR02400GAKAA heat pump system. The transformer steps down line voltage (120V) to the 24V signal voltage that powers your thermostat, control board, contactor coil, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dark — the thermostat goes blank, the system won't respond to any commands, and no heating or cooling is possible. A blown transformer is often caused by a short in the 24V wiring or a failed component drawing excess current; always inspect the low-voltage circuit before installing a replacement.

• Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched output for full compatibility with Carrier low-voltage control circuits
• OEM vs Generic: This OEM transformer is wound to Carrier's exact VA and voltage tolerances, ensuring stable 24V output under load. Generic transformers often use lighter gauge windings that run hot, sag under load, and fail prematurely — risking damage to your control board.
• Install difficulty: 2/5 — Disconnect power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wiring connections before removal. A typical replacement takes 20–30 minutes.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier HP13NR02400GAKAA heat pump. Verify primary voltage (120V) and VA rating on your existing transformer's label before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — order with confidence and get back up and running today.