{"product_id":"carrier-ch13na04900gabba-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V-24V for CH13NA04900GABBA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model CH13NA04900GABBA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CH13NA04900GABBA\u003c\/strong\u003e split-system air conditioner. The transformer steps down line voltage from 120V to the 24V AC signal that powers your thermostat, contactor coil, and all low-voltage control circuits. When this part fails, the entire control system goes dark — the thermostat loses power, nothing responds to commands, and the unit will not start. If you have 120V at the primary but zero volts at the secondary, this transformer is almost certainly the culprit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched for Carrier CH13NA04900GABBA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact VA and voltage tolerances. Generic transformers often run undersized VA ratings, causing nuisance tripping of the built-in fuse or premature burnout under normal control-circuit loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting, and confirm 24V output at secondary terminals after installation before re-energizing the full system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eCH13NA04900GABBA\u003c\/strong\u003e. 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 before you buy — call or chat anytime. Order today and get same-day shipping on all in-stock parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909624156531,"sku":"CARRIE-CH13NA04900GABBA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909624189299,"sku":"CARRIE-CH13NA04900GABBA-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_8be707be-644c-47ca-804a-e47fe98c14c9.jpg?v=1782939419","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na04900gabba-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}