OEM Carrier Control Transformer 40VA 120V/24V for Model CH13NA04300GABBA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier CH13NA04300GABBA split-system air conditioner. The control transformer steps down line voltage (120V) to the 24V signal voltage that powers the thermostat, contactor coil, and all low-voltage control circuitry. When this transformer fails, the entire control circuit goes dark — your thermostat displays nothing, the system ignores all calls for cooling, and no contactors energize. It is often the first component to inspect when a unit appears completely unresponsive despite confirmed line power.

• Specs: Input: 120V AC | Output: 24V AC | Rating: 40VA | OEM Part Number: HT01AW229 | Factory-matched to Carrier CH13NA04300GABBA control circuit requirements
• OEM vs Generic: This OEM transformer is wound and potted to Carrier's exact VA rating and insulation class. Generic transformers frequently run under-rated VA tolerances, causing premature thermal cutout trips and repeat failures under full control-circuit load.
• Install Difficulty: 2/5 — Shut off power at the disconnect and confirm zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all wires before removal. The transformer is typically mounted to the control panel bracket with two screws and uses push-on or screw-terminal connections.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our climate-controlled warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier CH13NA04300GABBA condenser. Always verify your existing transformer's input/output voltage and VA rating on the data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — contact us before you buy if you have any questions. Order today and get same-day shipping on all in-stock OEM parts.