{"product_id":"carrier-gb1aav048090aaja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB1AAV048090AAJA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model GB1AAV048090AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier GB1AAV048090AAJA\u003c\/strong\u003e gas furnace. The transformer steps down line voltage from 120V to the 24V signal voltage required to power the thermostat, control board, gas valve, and all low-voltage components. When the transformer fails, the result is total control circuit loss — your thermostat goes blank, nothing responds, and the system will not attempt to start. A blown transformer is often caused by a short in the low-voltage wiring or a failed control board, so inspect the wiring harness before installing the replacement.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage 120VAC | Secondary voltage 24VAC | 40VA rating | OEM part number HT01BC116 | Factory-matched output for full low-voltage circuit compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BC116 transformer is wound to exact factory VA and voltage tolerances, ensuring stable 24V output under full control circuit load. Generic transformers often under-deliver on VA capacity, causing nuisance lockouts or premature failure under peak demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting. Inspect for any shorted wiring that caused the original failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eGB1AAV048090AAJA\u003c\/strong\u003e gas furnace. Confirm your existing transformer reads 120V primary \/ 24V secondary at 40VA by checking the data label on the original component before ordering. Our fitment team is available to verify compatibility prior to purchase — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909421584755,"sku":"CARRIE-GB1AAV048090AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909421617523,"sku":"CARRIE-GB1AAV048090AAJA-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_e0989c5a-2f4a-4071-9e37-dfce7981976b.jpg?v=1782941376","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav048090aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}