{"product_id":"carrier-gb3aav036035aaja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for GB3AAV036035AAJA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BC116 for Model GB3AAV036035AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier GB3AAV036035AAJA\u003c\/strong\u003e gas furnace. The transformer steps down line voltage from 120V to 24V AC to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When the transformer fails, nothing in the system responds: the thermostat goes blank, the furnace won't fire, and you may find a blown fuse on the control board as a secondary symptom.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | Primary\/secondary wire leads | Factory-matched impedance for stable low-voltage circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer built to exact factory VA and voltage tolerances. Generic transformers may deliver inconsistent 24V output, causing nuisance lockouts, erratic ignition sequencing, or premature control board failure — making the OEM choice the safer long-term investment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and confirm zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire nuts or terminal connectors, multimeter. Photograph existing wiring before disconnecting. Installation typically takes 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eGB3AAV036035AAJA\u003c\/strong\u003e gas furnace. Verify your existing transformer's input\/output voltage and VA rating against your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909401923955,"sku":"CARRIE-GB3AAV036035AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909401956723,"sku":"CARRIE-GB3AAV036035AAJA-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_ab608f63-faeb-4ace-81c0-2c5368ce3816.jpg?v=1782941415","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav036035aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}