{"product_id":"carrier-hc1bnx048000aaaa-transformer-h4oyjb","title":"OEM Carrier Transformer 40VA 24V for HC1BNX048000AAAA — HT01AW229","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 24V Control Circuit for Model HC1BNX048000AAAA\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 HC1BNX048000AAAA\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, contactor coil, and all low-voltage control components. When the transformer fails, the entire system goes dark — the thermostat loses power, the contactor won't energize, and neither heating nor cooling will operate. A failed transformer is often misdiagnosed as a thermostat or control board issue, so always verify 24V output at the secondary terminals before replacing other components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Ring-mount or bracket mount | OEM part number HT01AW229 — exact factory match for HC1BNX048000AAAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to precise VA ratings and insulation standards. Undersized or off-spec generic units can overheat under full control-circuit load, tripping built-in fuses or failing prematurely — a costly callback risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before touching any wiring. Tools needed: multimeter, flathead and Phillips screwdrivers, wire nuts or spade terminals. Label all wires before disconnecting the old unit and confirm primary\/secondary orientation before energizing.\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 Engineered specifically for the Carrier \u003cstrong\u003eHC1BNX048000AAAA\u003c\/strong\u003e packaged unit. Confirm your existing transformer's VA rating and primary\/secondary voltage from your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909339042163,"sku":"CARRIE-HC1BNX048000AAAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909339074931,"sku":"CARRIE-HC1BNX048000AAAA-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_b43a1865-161a-4e98-8df6-2c2085f96b3f.jpg?v=1782942608","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hc1bnx048000aaaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}