{"product_id":"carrier-c50a602064-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A602064","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD702 for Model C50A602064\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C50A602064\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including your thermostat, contactor coil, and control board. When it fails, the entire control circuit goes dead: the thermostat goes blank, the system shows no response whatsoever, and the unit will not start. It is often one of the first components to check when an HVAC system appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output rating | 120V primary \/ 24V secondary | Factory-matched OEM part number HT01BD702 | Designed for Carrier commercial packaged unit applications\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 tolerances. Undersized or off-spec generic transformers can sag under load, causing erratic control behavior, nuisance lockouts, and premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before servicing. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter (to confirm 24V output post-installation). Photograph all wiring connections before disconnecting the old transformer.\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 Engineered as a direct OEM replacement for the \u003cstrong\u003eCarrier C50A602064\u003c\/strong\u003e packaged unit. Always verify primary voltage and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909666165107,"sku":"CARRIE-C50A602064-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909666197875,"sku":"CARRIE-C50A602064-TRANSFORMER-HT01BD702-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-HT01BD702_0abbdbbb-f91a-4fab-995a-95024ad6fe74.jpg?v=1782940654","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a602064-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}