{"product_id":"carrier-gb1aav036055aaja-transformer-h2usbz","title":"OEM Carrier 40VA Transformer 120V-24V for GB1AAV036055AAJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model GB1AAV036055AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (Part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB1AAV036055AAJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage control circuit components. When the transformer fails, the entire control circuit goes dead — the thermostat display may go blank, the system won't respond to any calls for heat or cooling, and no fault codes will appear on the board because there's simply no power to operate it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM Part# HT01BC116 | Factory-matched output for Carrier GB1AAV036055AAJA control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers deliver stable, regulated 24V output within tight tolerances. Generic units often produce voltage spikes or sag under load, which can damage sensitive control boards and thermostats over time — making the OEM choice the smarter long-term investment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before disconnecting the old transformer.\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 and tested for the Carrier \u003cstrong\u003eGB1AAV036055AAJA\u003c\/strong\u003e gas furnace. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909428826483,"sku":"CARRIE-GB1AAV036055AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909428859251,"sku":"CARRIE-GB1AAV036055AAJA-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_93e08ecd-997f-49f6-ad79-0930838fd5ae.jpg?v=1782899584","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav036055aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}