{"product_id":"carrier-gb1aav048135afja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V-24V for GB1AAV048135AFJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model GB1AAV048135AFJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB1AAV048135AFJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V low-voltage signal that powers your thermostat, control board, gas valve, and all safety circuits. When this component fails, the entire control circuit goes dark — the thermostat goes blank, the system refuses to respond to any call for heat or cooling, and no other diagnostic troubleshooting will resolve the issue until the transformer is replaced.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Single-phase | Designed for continuous duty in furnace applications | OEM part number HT01BC116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a factory OEM transformer built to Carrier's exact VA rating and insulation class. Generic transformers often carry inadequate VA ratings, causing them to overheat under full control-circuit load and trip thermal protection repeatedly — shortening the life of every connected component.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter for verification. Label all 24V wiring before disconnecting old unit. Verify 24V output with meter before buttoning up the furnace cabinet.\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\u003eGB1AAV048135AFJA\u003c\/strong\u003e gas furnace. Always confirm transformer VA rating and primary\/secondary voltage on your unit's wiring diagram or data plate before ordering. Our fitment team is available to verify compatibility before you purchase — ensuring you get the right part the first time and avoid costly return shipping delays.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909415227763,"sku":"CARRIE-GB1AAV048135AFJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909415260531,"sku":"CARRIE-GB1AAV048135AFJA-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_64a0c7d4-8e54-4ecc-9dbe-c4637b544b5f.jpg?v=1782939820","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav048135afja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}