{"product_id":"carrier-ch13na04200gacba-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V\/24V for CH13NA04200GACBA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model CH13NA04200GACBA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CH13NA04200GACBA\u003c\/strong\u003e split-system air conditioner. The transformer steps down line voltage from 120V to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuits. When this transformer fails, absolutely nothing in the system responds — the thermostat goes blank, the contactor won't pull in, and the unit sits completely dead. It is one of the most overlooked components during diagnostics and one of the most satisfying fixes once identified.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01AW229 | Replaces factory-original unit to exact electrical specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to precise VA and voltage tolerances that protect your control board. Undersized or off-spec generic units can deliver unstable 24V output, causing erratic contactor chatter, nuisance lockouts, or premature board failure.\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 (to confirm 0V before touching terminals and 24V output after install). Take a photo of all low-voltage wire connections before removing the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-specified for the \u003cstrong\u003eCarrier CH13NA04200GACBA\u003c\/strong\u003e condensing unit. Always verify the 40VA rating and 120V primary\/24V secondary specification on your existing transformer's label before ordering. Our fitment team is available to confirm compatibility before you purchase — just ask.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909628842355,"sku":"CARRIE-CH13NA04200GACBA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909628875123,"sku":"CARRIE-CH13NA04200GACBA-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_e71940df-d406-4109-9d07-a2d1d8540da1.jpg?v=1782940769","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na04200gacba-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}