{"product_id":"carrier-hgrh50hj441043-transformer-h3025m","title":"OEM Carrier Transformer 40VA 120V\/24V for HGRH50HJ441043","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model HGRH50HJ441043\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD242\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier HGRH50HJ441043\u003c\/strong\u003e unit. The control transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the system goes completely silent: the thermostat display may go blank, the contactor won't pull in, and no heating or cooling operation can begin. A failed transformer is one of the most common causes of a completely unresponsive HVAC system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD242 | Factory-matched electrical characteristics for reliable control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact factory VA and voltage specifications. Undersized or off-tolerance generic transformers can overload and burn out quickly, especially when multiple 24V accessories (humidistats, zone controllers) are on the circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wire connections before disconnecting. Verify 24V output with a multimeter after installation before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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 as the direct OEM replacement for \u003cstrong\u003eCarrier model HGRH50HJ441043\u003c\/strong\u003e. Confirm your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or existing transformer label before ordering. Our fitment team is available to verify compatibility prior to purchase — don't guess on a control circuit part.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909330882931,"sku":"CARRIE-HGRH50HJ441043-TRANSFORMER-HT01BD242","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909330915699,"sku":"CARRIE-HGRH50HJ441043-TRANSFORMER-HT01BD242-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-HT01BD242_45edfa6b-f4e9-481e-9135-dd0269a279b6.jpg?v=1782941622","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hgrh50hj441043-transformer-h3025m","provider":"National HVAC Parts","version":"1.0","type":"link"}