{"product_id":"carrier-n6a48ng481881-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 120V\/24V for N6A48NG481881","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model N6A48NG481881\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier N6A48NG481881\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V signal required to power the control board, thermostat circuit, and all low-voltage components. When this part fails, the entire control circuit goes dead — your thermostat loses communication, the system won't respond to calls for heating or cooling, and no error codes can even be generated. If you're getting 120V at the transformer primary but zero output on the secondary, this is your part.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120VAC | Output 24VAC | 40VA rating | OEM part number HT01BC116 | Factory-matched output tolerance for stable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage specifications for the Carrier N6A48NG481881 control circuit. Undersized or off-tolerance generic units can cause erratic thermostat behavior, nuisance tripping of the 3-amp fuse, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect block before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label or photograph all low-voltage wiring connections before removal. Verify 120V input and 24V output with a multimeter after installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty included. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eN6A48NG481881\u003c\/strong\u003e packaged gas\/electric unit. Confirm OEM part number HT01BC116 on your existing transformer label before ordering. Not sure it's the right fit? Our HVAC parts specialists verify fitment before every order — reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909274063219,"sku":"CARRIE-N6A48NG481881-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909274095987,"sku":"CARRIE-N6A48NG481881-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_349f9fb1-324b-4b98-99c0-f1eacf9c5b7d.jpg?v=1782941770","url":"https:\/\/nationalhvacparts.com\/products\/carrier-n6a48ng481881-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}