OEM Carrier Control Transformer 40VA 120V/24V for Model CH13NA03600GAAAA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier CH13NA03600GAAAA split-system condenser. The transformer steps down line voltage from 120V to the 24V used by your thermostat, contactor coil, and control board. When this component fails, the entire control circuit loses power — the result is a system that appears completely dead, with no thermostat response, no contactor engagement, and no error codes displayed. If you've confirmed 120V supply at the unit but have no 24V signal at the control terminals, this transformer is the most likely culprit.

• Specs: 40VA rating | Primary: 120V | Secondary: 24V | Factory-matched OEM part number HT01AW229 | Designed for continuous low-voltage control circuit duty
• OEM vs Generic: The OEM HT01AW229 transformer meets Carrier's exact VA rating and insulation class specifications. Undersized or off-tolerance aftermarket transformers can overload under normal demand from accessory loads like zone boards or humidistats, leading to premature failure.
• Install difficulty: 2/5 — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Label or photograph all low-voltage wiring connections before removing the old unit. Verify 24V output at secondary terminals after installation before closing the panel.
• Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier model CH13NA03600GAAAA (3-ton, single-stage R-410A condenser). Always verify your existing transformer's VA rating and primary/secondary voltages against your unit's data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping available on all in-stock OEM parts.