{"product_id":"carrier-ch13na01900gabba-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V\/24V for CH13NA01900GABBA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model CH13NA01900GABBA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part# \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CH13NA01900GABBA\u003c\/strong\u003e condensing unit. 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 component fails, the entire control circuit goes dead — the thermostat goes blank, the system stops responding to calls for cooling, and no components energize. If your Carrier unit has power at the disconnect but nothing responds at the thermostat, a failed transformer is one of the first components to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V AC | OEM part number HT01AW229 | Factory-matched for Carrier CH13NA01900GABBA control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact VA and voltage tolerances specified by Carrier engineering. Generic transformers can run under-rated VA loads, causing premature thermal cutout failures and nuisance lockouts under full control circuit demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all low-voltage wiring before disconnecting. Confirm primary and secondary wiring polarity matches original installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3PM local time ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eCH13NA01900GABBA\u003c\/strong\u003e condensing unit. Always verify the 40VA rating and 120V\/24V configuration against your unit's data plate and wiring diagram before ordering. Our fitment specialists are available to confirm compatibility — reach out before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909640147315,"sku":"CARRIE-CH13NA01900GABBA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909640180083,"sku":"CARRIE-CH13NA01900GABBA-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_fefa4ffc-00c1-4036-b06a-36abb7709de4.jpg?v=1782940742","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na01900gabba-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}