{"product_id":"carrier-subclr50hj440480-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V — SUBCLR50HJ440480","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model SUBCLR50HJ440480\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part #HT01BD209) factory-specified for the \u003cstrong\u003eCarrier SUBCLR50HJ440480\u003c\/strong\u003e. The transformer steps down line voltage from 208\/240V to a safe 24V signal used by the thermostat, control board, contactor coil, and all low-voltage circuits. When this transformer fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system won't call for heating or cooling, and no fault codes will display because the board itself has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 208\/240V primary input | 24V secondary output | 50\/60 Hz compatible | Class 2 control transformer | Foot-mount configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-original unit is wound to exact VA and voltage tolerances. Undersized or off-spec generic transformers can overheat, trip internal thermal protection, or fail within one season — leading to repeat service calls and voided equipment warranties.\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. Always label or photograph existing wiring connections before disconnecting. Verify 24V output at secondary terminals after installation before restoring system power.\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 for the Carrier \u003cstrong\u003eSUBCLR50HJ440480\u003c\/strong\u003e. Also cross-references and replaces legacy part numbers HT01BD207, HT01CN232, and 9076-00. Confirm your unit's voltage requirements against your data plate before ordering. Our technical team is available to verify fitment — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640288399731,"sku":"CARRIE-SUBCLR50HJ440480-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640288432499,"sku":"CARRIE-SUBCLR50HJ440480-TRANSFORMER-HT01BD209-GEN","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_a1615e93-82f8-4df5-80d5-f48bb3653982.jpg?v=1775025837","url":"https:\/\/nationalhvacparts.com\/products\/carrier-subclr50hj440480-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}