{"product_id":"carrier-gb3aav024070acja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV024070ACJA","description":"\u003ch1\u003eOEM Carrier Control Circuit Transformer 40VA for Model GB3AAV024070ACJA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eGB3AAV024070ACJA\u003c\/strong\u003e gas furnace. The transformer steps down line voltage from 120V to 24V AC to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this component fails, absolutely nothing in the system responds: the thermostat goes blank, the furnace won't initiate a heating cycle, and there is no 24V signal anywhere in the control circuit. It is often one of the first parts to check when a furnace appears completely dead despite having power at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Factory-matched output tolerance for reliable control circuit performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer meets Carrier's exact VA rating and insulation class requirements. Generic transformers may be undersized in VA capacity, causing voltage sag under load that leads to nuisance lockouts and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Verify 24V output at secondary terminals after installation before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship 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\u003eGB3AAV024070ACJA\u003c\/strong\u003e gas furnace. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909404184947,"sku":"CARRIE-GB3AAV024070ACJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909404217715,"sku":"CARRIE-GB3AAV024070ACJA-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_d790b07f-bf1a-4ae4-9b0d-8a9f4242fe27.jpg?v=1782941405","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav024070acja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}