{"product_id":"carrier-gb3aav036070abja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV036070ABJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V–24V for Model GB3AAV036070ABJA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier GB3AAV036070ABJA\u003c\/strong\u003e gas furnace. The transformer steps down line voltage (120V) to the 24V AC signal used by your thermostat, control board, and all low-voltage control circuits. When this part fails, the entire control circuit goes dark — your thermostat will show no power, the furnace will not respond to any calls for heat, and no error codes will display because the board itself has no power to run diagnostics.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory-matched OEM replacement | Part number HT01BC116 | Terminal connection style matches original harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA tolerance, protecting sensitive control boards from voltage spikes. Generic transformers may under-deliver on VA output, causing nuisance lockouts and premature 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 for output verification. Label or photograph all wire connections before removing the original transformer. Confirm 24V output at secondary terminals before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 specifically for the Carrier \u003cstrong\u003eGB3AAV036070ABJA\u003c\/strong\u003e gas furnace. Always verify primary voltage, secondary voltage, and VA rating on your unit's data plate or wiring diagram before ordering. Our fitment specialists are available to confirm compatibility before you purchase — reach out anytime. Order today and your part ships same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909399368051,"sku":"CARRIE-GB3AAV036070ABJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909399400819,"sku":"CARRIE-GB3AAV036070ABJA-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_5dfb5a15-7c6d-4555-952c-71f61717a478.jpg?v=1782941422","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav036070abja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}