{"product_id":"carrier-gb3aav036070acja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V-24V for GB3AAV036070ACJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model GB3AAV036070ACJA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GB3AAV036070ACJA\u003c\/strong\u003e gas furnace. The transformer steps down line voltage from 120V AC to 24V AC, powering the low-voltage control circuit that drives your thermostat, gas valve, inducer relay, and control board. When the transformer fails, the entire control circuit goes dead — the thermostat loses power, nothing responds to a call for heat or cooling, and the system will not operate at all. A failed transformer is one of the most commonly misdiagnosed furnace problems, often confused with a bad thermostat or control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory OEM part number HT01BC116 | Matches original wiring harness footprint for direct drop-in installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer — wound to exact VA and voltage specifications. Generic transformers frequently run under-rated VA, causing nuisance tripping of the built-in thermal fuse and premature failure under normal HVAC load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is off before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph existing wiring connections before removing the old unit. Primary and secondary terminals are clearly labeled for straightforward reconnection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders received before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Carrier \u003cstrong\u003eGB3AAV036070ACJA\u003c\/strong\u003e gas furnace. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909399040371,"sku":"CARRIE-GB3AAV036070ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909399073139,"sku":"CARRIE-GB3AAV036070ACJA-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_9892f9a5-3b5c-4ac9-96c9-b6683a3dfb19.jpg?v=1782939853","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav036070acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}