{"product_id":"carrier-gb3aav024055aaja-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V-24V for GB3AAV024055AAJA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model GB3AAV024055AAJA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier GB3AAV024055AAJA\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V signal voltage required by your thermostat, control board, gas valve, and all low-voltage control components. When this transformer fails, the entire control circuit goes dark — your thermostat loses power, the furnace won't respond to any call for heat, and nothing works. It is often the first component to check when a furnace is completely unresponsive with no error codes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory-matched OEM part number HT01BC116 | Direct plug-in or screw-terminal mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA ratings, ensuring stable 24V output under full control-circuit load. Undersized generic units can sag below 24V, causing intermittent lockouts, nuisance tripping, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and disconnect the furnace plug before beginning. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter to verify 24V output after installation. Label or photograph all low-voltage wiring connections before removal.\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 and factory-matched for the Carrier \u003cstrong\u003eGB3AAV024055AAJA\u003c\/strong\u003e gas furnace. Verify your existing transformer's VA rating and wire lead configuration against your unit's wiring diagram before ordering. Our fitment team is available to confirm compatibility before you purchase — same-day shipping means you're back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909404676467,"sku":"CARRIE-GB3AAV024055AAJA-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909404709235,"sku":"CARRIE-GB3AAV024055AAJA-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_5ce9db35-e425-4bf0-af91-b5a62f5b79fb.jpg?v=1782939848","url":"https:\/\/nationalhvacparts.com\/products\/carrier-gb3aav024055aaja-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}