{"product_id":"carrier-gb3aav036050agja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV036050AGJA","description":"\u003ch1\u003eOEM Carrier Control Circuit Transformer 40VA for Model GB3AAV036050AGJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GB3AAV036050AGJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to 24V AC, powering the control board, thermostat circuit, and all low-voltage switching components. When this transformer fails, the entire control circuit goes dead — the thermostat displays nothing, the furnace won't respond to any call for heat, and no fault codes will appear because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | Output: 40VA | OEM part number: HT01BC116 | Factory-matched wire leads and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance specifications for the Carrier GB3AAV036050AGJA control board. Undersized or off-spec generic units can overheat under load, trip the thermal cutoff, or deliver unstable 24V that causes erratic contactor and gas valve behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or quick-connects. Photograph or label all low-voltage wiring before removal. Verify 24V output at secondary leads with a multimeter after installation before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eGB3AAV036050AGJA\u003c\/strong\u003e furnace. Always confirm the transformer's primary\/secondary voltage and VA rating on your unit's wiring diagram or data plate before ordering. If your system has added accessories such as a humidifier or UV light drawing additional VA load, verify total circuit draw does not exceed 40VA. Our fitment team is available to confirm compatibility before you order — same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909399892339,"sku":"CARRIE-GB3AAV036050AGJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909399925107,"sku":"CARRIE-GB3AAV036050AGJA-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_ad21b53e-ca32-494d-8f9d-b90344039274.jpg?v=1782941420","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav036050agja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}