{"product_id":"carrier-ch13na01900gabaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V\/24V for CH13NA01900GABAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model CH13NA01900GABAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier CH13NA01900GABAA\u003c\/strong\u003e air conditioner. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any call for cooling or heating, and no components energize. A blown transformer is often the result of a short in the low-voltage wiring or a failed control board drawing excess current — always inspect the secondary circuit before installing a replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | OEM part number HT01AW229 | Factory-matched construction for reliable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage tolerances. Generic transformers may under-deliver VA capacity under load, causing nuisance dropouts, control board brownouts, and premature failure — especially in multi-stage systems drawing full 24V demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and disconnect switch before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Verify input and output voltages with a multimeter after installation before restoring full system operation. Always check low-voltage wiring for shorts prior to energizing the new transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eCH13NA01900GABAA\u003c\/strong\u003e condenser. Verify your existing transformer's input\/output voltage and VA rating on the unit data plate or wiring diagram before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909640802675,"sku":"CARRIE-CH13NA01900GABAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909640835443,"sku":"CARRIE-CH13NA01900GABAA-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_8ead4946-e932-4d59-8cf5-80536457a3f8.jpg?v=1782940739","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na01900gabaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}