{"product_id":"carrier-ga2aad048091acja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GA2AAD048091ACJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model GA2AAD048091ACJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GA2AAD048091ACJA\u003c\/strong\u003e packaged or split-system unit. The transformer steps down line voltage (120V) to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this component fails, nothing in the control circuit responds — the thermostat goes blank, the system refuses to start, and no fault codes are generated because the board itself has no power to report them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Replaces OEM part number HT01BC116 | Factory-matched construction for direct drop-in fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers use the exact VA rating and insulation class specified by Carrier engineering. Undersized or off-tolerance generic units can overheat under load, trip internal thermal protection, and leave you chasing an intermittent no-power fault that is frustratingly difficult to diagnose.\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, needle-nose pliers, multimeter (verify 0V before touching wires). Label or photograph all low-voltage wiring connections before removal. Installation typically takes 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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\u003eGA2AAD048091ACJA\u003c\/strong\u003e. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating on the unit's data plate or wiring diagram before ordering. If you have any questions about fitment, our HVAC parts specialists confirm compatibility before your order ships — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909441180019,"sku":"CARRIE-GA2AAD048091ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909441212787,"sku":"CARRIE-GA2AAD048091ACJA-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_62e20436-2ee0-4549-beff-38739cb05af4.jpg?v=1782941331","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ga2aad048091acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}