{"product_id":"carrier-hc1ajx036000aaaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 120V-24V for HC1AJX036000AAAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model HC1AJX036000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier HC1AJX036000AAAA\u003c\/strong\u003e air handler. The transformer steps down line voltage from 120V to the 24V AC signal required to power the thermostat, control board, and all low-voltage control components. When the transformer fails, the entire control circuit goes dead — your thermostat display may go blank, the system won't respond to calls for heating or cooling, and no fault codes will appear because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Factory OEM part number HT01AW229 | Includes integral circuit breaker protection on most configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generic transformers can cause nuisance tripping, board brownouts, and premature contactor coil failure — choose OEM for reliable long-term performance.\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, needle-nose pliers, multimeter (to confirm 24V output after install). Always label or photograph low-voltage wiring before disconnecting terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eHC1AJX036000AAAA\u003c\/strong\u003e air handler. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get back to comfort fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909342351731,"sku":"CARRIE-HC1AJX036000AAAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909342384499,"sku":"CARRIE-HC1AJX036000AAAA-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_cb841786-0857-4792-b01d-69241ea8518a.jpg?v=1782939917","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hc1ajx036000aaaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}