{"product_id":"carrier-gb3aav060135abja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV060135ABJA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model GB3AAV060135ABJA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GB3AAV060135ABJA\u003c\/strong\u003e gas furnace. The transformer steps down line voltage from 120V to the 24V AC signal used by your thermostat, control board, gas valve, and all low-voltage components. When this transformer fails, the entire control circuit goes dead — your thermostat shows a blank screen, nothing responds, and the furnace will not attempt ignition under any condition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Factory-matched impedance and thermal protection | Direct OEM replacement for part number HT01BC116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to Carrier's exact VA and impedance specifications, protecting sensitive downstream components like the IFC control board. Generic transformers rated at nominal 40VA often sag under load, causing erratic lockouts and premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Photograph all wiring connections before disconnecting. Swap wire-for-wire and restore power to verify 24V output at secondary terminals.\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 NationalHVACParts.com warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eGB3AAV060135ABJA\u003c\/strong\u003e gas furnace. Always confirm the 40VA rating and 120V\/24V step-down configuration on your unit's data plate before ordering. Our fitment team is available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909386424691,"sku":"CARRIE-GB3AAV060135ABJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909386457459,"sku":"CARRIE-GB3AAV060135ABJA-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_ed7882f6-8b4a-40f1-9735-d4f15f608e7c.jpg?v=1782941470","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav060135abja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}