{"product_id":"carrier-gb3aav024050afja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120\/24V HT01BC116 — GB3AAV024050AFJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model GB3AAV024050AFJA\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 GB3AAV024050AFJA\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 switching components. When this transformer fails, the entire control circuit goes dark — the thermostat displays nothing, the inducer never starts, and the system will not attempt ignition. A failed transformer is one of the most common causes of a completely unresponsive furnace and is often misdiagnosed as a control board failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 control circuit transformer | Direct OEM replacement for part number HT01BC116 | Exceeds UL listed requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to Carrier's exact VA rating and insulation class. Generic transformers often underrate their true VA capacity, causing thermal overload trips and premature failure — especially in systems with multiple 24V accessories such as humidifiers, zone boards, or communicating thermostats.\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 beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label or photograph all low-voltage wiring connections before disconnecting. Replace any blown 3A fuse on the control board at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eGB3AAV024050AFJA\u003c\/strong\u003e gas furnace. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. If your system includes a whole-home humidifier or multiple zone controllers, confirm the 40VA rating meets your total low-voltage load. Our fitment team is available to verify compatibility before you order — \u003cstrong\u003ein stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909404807539,"sku":"CARRIE-GB3AAV024050AFJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909404840307,"sku":"CARRIE-GB3AAV024050AFJA-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_79f113a3-2ad9-4736-b31a-da26ddd9e5f1.jpg?v=1782938779","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav024050afja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}