{"product_id":"carrier-gb1aav036065aeja-transformer-h2usbz","title":"OEM Carrier Control Transformer 40VA 120\/24V for GB1AAV036065AEJA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V to 24V for Model GB1AAV036065AEJA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part# \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier GB1AAV036065AEJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to 24V to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When the transformer fails, the result is a completely unresponsive system: your thermostat goes blank, no heating cycle initiates, and no error codes appear because the control board itself has lost power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Class 2 output | Compact chassis-mount design | OEM part number HT01BC116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to exact VA and voltage tolerances required by the GB1AAV036065AEJA control board. Undersized or off-tolerance generic transformers can sag under load, causing intermittent lockouts, nuisance trips, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label or photograph all low-voltage wiring before disconnecting. Reconnect primary (120V) leads first, then secondary (24V) terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eGB1AAV036065AEJA\u003c\/strong\u003e gas furnace. Always verify the existing transformer's VA rating and primary\/secondary voltage on the unit data plate or existing component label before ordering. If you have questions about fitment, our HVAC parts specialists confirm compatibility before your order ships — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909427319155,"sku":"CARRIE-GB1AAV036065AEJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909427351923,"sku":"CARRIE-GB1AAV036065AEJA-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_4f30b82e-0b87-402e-935c-2b420abf8e34.jpg?v=1782911294","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb1aav036065aeja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}