{"product_id":"carrier-ch13na04300gabaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V-24V for CH13NA04300GABAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model CH13NA04300GABAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCH13NA04300GABAA\u003c\/strong\u003e split-system condenser. The transformer steps down line voltage from 120V to the 24V AC signal that powers your thermostat, contactor coil, and all low-voltage control circuitry. When the transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system produces no response whatsoever, and no other components will energize. A failed transformer is often mistaken for a bad thermostat or control board, making correct diagnosis critical before replacing more expensive parts.\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 impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to exact VA and impedance specifications for the CH13NA04300GABAA. Generic units often underrate their VA capacity, causing thermal cutout trips under normal contactor and board loads — leading to repeat failures and misdiagnosed service calls.\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. Confirm secondary output reads 24–28V AC after installation before restoring full power. Always verify primary and secondary wiring polarity matches original configuration.\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\u003eCH13NA04300GABAA\u003c\/strong\u003e split-system condenser. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping means you're never waiting long to get your system back online.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909628219763,"sku":"CARRIE-CH13NA04300GABAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909628252531,"sku":"CARRIE-CH13NA04300GABAA-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_109104df-61cf-4bba-9cd1-f0bcfc2f2ce2.jpg?v=1782939414","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch13na04300gabaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}