{"product_id":"carrier-gb1aav036045acja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB1AAV036045ACJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model GB1AAV036045ACJA\u003c\/h1\u003e\u003cp\u003eThis OEM control circuit transformer (part# HT01BC116) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB1AAV036045ACJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to 24V AC to power the control board, thermostat, gas valve, and all low-voltage components. When it fails, the entire control circuit goes dead — the thermostat loses power, the system won't respond to calls for heat or cooling, and nothing works. A failed transformer is often the first thing an HVAC technician checks when a system is completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory-matched OEM part# HT01BC116 | Direct plug-in or wire-in mount compatible with furnace control board bracket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory OEM transformer. Generic units may carry insufficient VA ratings or use lower-grade core materials, leading to overheating and premature failure — especially in systems with multiple 24V accessories such as humidifiers or zone boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and disconnect the furnace before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections prior to removal. Verify 24V output with a multimeter after installation before closing the cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Carrier \u003cstrong\u003eGB1AAV036045ACJA\u003c\/strong\u003e gas furnace. Confirm your existing transformer's VA rating and primary\/secondary voltage on the unit's data plate or wiring diagram before ordering. Our parts specialists are available to verify fitment — order with confidence and get back to comfort fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909430497651,"sku":"CARRIE-GB1AAV036045ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909430530419,"sku":"CARRIE-GB1AAV036045ACJA-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_5468fd8b-e256-4fe8-9d18-238584ca321c.jpg?v=1782941353","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav036045acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}