{"product_id":"carrier-n6a48ng481455-transformer-h2usbz","title":"OEM Carrier Transformer 40VA 24V for N6A48NG481455 — HT01BC116","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model N6A48NG481455 (HT01BC116)\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer for the \u003cstrong\u003eCarrier N6A48NG481455\u003c\/strong\u003e packaged unit, OEM part number \u003cstrong\u003eHT01BC116\u003c\/strong\u003e. The transformer steps down line voltage (120V) to the 24V AC signal required by the control circuit, thermostat, and low-voltage safety components. When this transformer fails, the entire control system loses power — symptoms include a completely unresponsive thermostat, no response to any call for heating or cooling, and tripped 3-amp control fuses that keep blowing on reset. A failed transformer is one of the most commonly misdiagnosed HVAC faults, often confused for a bad control board or thermostat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BC116 | Factory-matched impedance and core construction for full control circuit stability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerance specifications for the Carrier control board. Undersized or off-spec generic units can cause erratic thermostat behavior, nuisance tripping, and premature board damage — OEM is always the safer choice for the control circuit backbone.\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 servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wiring connections before removing the old transformer. Check and replace any blown control fuses (typically 3A) as part of the repair.\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 specifically for the Carrier \u003cstrong\u003eN6A48NG481455\u003c\/strong\u003e packaged gas\/electric unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring diagram before ordering. Our parts team is available to confirm fitment — same-day shipping on orders placed before 3PM EST.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909279240563,"sku":"CARRIE-N6A48NG481455-TRANSFORMER-HT01BC116","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909279273331,"sku":"CARRIE-N6A48NG481455-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_99d3fb77-8f4e-4593-bcb8-99500db6a5c6.jpg?v=1782942651","url":"https:\/\/nationalhvacparts.com\/products\/carrier-n6a48ng481455-transformer-h2usbz","provider":"National HVAC Parts","version":"1.0","type":"link"}