{"product_id":"carrier-ch13na03100gabba-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V\/24V for CH13NA03100GABBA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model CH13NA03100GABBA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CH13NA03100GABBA\u003c\/strong\u003e split-system air conditioner. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, and any zone controls. When the transformer fails, nothing works: the thermostat goes blank, the system won't respond to any call for cooling or heating, and you may find a blown fuse on the control board. It is one of the first components to check when the system appears completely dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | Direct OEM replacement for part number HT01AW229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and insulated to Carrier's exact factory specifications, ensuring stable 24V output under full load. Undersized or off-brand transformers can sag under load, causing intermittent lockouts and nuisance tripping of control-board fuses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify 24V output with a multimeter after installation before closing the panel. Always check for a shorted control circuit (e.g., pinched thermostat wire) that may have caused the original failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for the \u003cstrong\u003eCarrier CH13NA03100GABBA\u003c\/strong\u003e condensing unit. Cross-reference OEM part number HT01AW229 and verify your unit's data plate shows 120V control power before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before every order — just reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909634969971,"sku":"CARRIE-CH13NA03100GABBA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909635002739,"sku":"CARRIE-CH13NA03100GABBA-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_02e0eb45-9046-455b-b7ff-1b00d3af5d69.jpg?v=1782940757","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na03100gabba-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}