{"product_id":"carrier-ga1aad048086acja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GA1AAD048086ACJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model GA1AAD048086ACJA\u003c\/h1\u003e\u003cp\u003eThis OEM control circuit transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GA1AAD048086ACJA\u003c\/strong\u003e packaged gas\/electric unit. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, control board, and all low-voltage control circuits. When this transformer fails, the entire control system loses power — the thermostat goes blank, the system won't respond to any calls for heating or cooling, and the unit sits completely dead despite line voltage being present at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BC116 | Factory-matched electrical ratings for reliable control circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to Carrier's exact VA rating and insulation class, preventing nuisance tripping and overheating under full control circuit load. Generic units often underrate their VA capacity, causing premature failure when multiple accessories share the 24V circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Always confirm 0V at both primary and secondary terminals before touching wiring. Photograph all wire connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eGA1AAD048086ACJA\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering to ensure a correct fit. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions. Order now and get your system back online fast with same-day shipping.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909451272563,"sku":"CARRIE-GA1AAD048086ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909451305331,"sku":"CARRIE-GA1AAD048086ACJA-TRANSFORMER-HT01BC116-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-HT01BC116_efb7119d-0974-4c13-b035-64aa79116388.jpg?v=1782941318","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ga1aad048086acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}