{"product_id":"carrier-gb3aav048095adja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV048095ADJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model GB3AAV048095ADJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GB3AAV048095ADJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V signal required by the control board, thermostat, gas valve, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dark — your thermostat will appear dead, the furnace won't respond to any call for heat, and no diagnostic codes will display on the control board, since it has no power to operate.\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# HT01BC116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage specifications for this furnace platform. Undersized or off-tolerance generic units can sag under load, causing intermittent lockouts, nuisance trips on the secondary fuse, or premature control board failure.\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, needle-nose pliers, multimeter (to confirm 24V output after install). Label all low-voltage wires before removing the old transformer. The secondary fuse should also be inspected and replaced if blown.\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 Engineered specifically for the Carrier \u003cstrong\u003eGB3AAV048095ADJA\u003c\/strong\u003e gas furnace. Always verify the OEM part number HT01BC116 on your existing transformer's label or your unit's wiring diagram before ordering. If you're unsure of fitment, our HVAC parts team is available to confirm compatibility before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909392847219,"sku":"CARRIE-GB3AAV048095ADJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909392879987,"sku":"CARRIE-GB3AAV048095ADJA-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_e89542be-eb8a-4309-b27e-a2fd1f85598d.jpg?v=1782941440","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav048095adja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}