{"product_id":"carrier-ch13na02500gabba-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V-24V for CH13NA02500GABBA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01AW229 for Model CH13NA02500GABBA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part# \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) designed specifically for the \u003cstrong\u003eCarrier CH13NA02500GABBA\u003c\/strong\u003e split-system air conditioner. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and all low-voltage control circuitry. When this component fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system will not call for cooling or heating, and no indicators light up on the control board. A failed transformer is often misdiagnosed as a bad thermostat or control board, making it one of the first components to test in a no-response scenario.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Designed to OEM factory tolerance | Direct plug-and-play fit for Carrier CH13NA02500GABBA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM part HT01AW229 is wound and insulated to Carrier's exact VA and thermal specifications. Generic transformers may be underrated in VA capacity, causing premature overload failure — especially in systems with multiple low-voltage accessories such as humidifiers or zone controllers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after installation). Photograph or label all low-voltage wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the Carrier \u003cstrong\u003eCH13NA02500GABBA\u003c\/strong\u003e condenser\/air handler system. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909637624179,"sku":"CARRIE-CH13NA02500GABBA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909637656947,"sku":"CARRIE-CH13NA02500GABBA-TRANSFORMER-HT01AW229-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01AW229_13d59569-b2d3-42eb-9bfc-c5f45d8e2221.jpg?v=1782939401","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na02500gabba-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}