{"product_id":"carrier-c50a302752-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A302752","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C50A302752\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier C50A302752\u003c\/strong\u003e packaged unit. It converts 120V line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control components. When this transformer fails, nothing in the control circuit responds — the thermostat goes blank, the unit won't call for heating or cooling, and the system appears completely dead despite having line power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Direct OEM replacement | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers like this HT01BD236 are wound to exact Carrier factory tolerances, ensuring stable 24V output under full control-circuit load. Generic transformers often under-deliver VA capacity, causing voltage sag that trips boards and contactors unpredictably.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter to verify 24V output after installation. Always confirm polarity and label wires before disconnecting the old transformer.\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\u003eC50A302752\u003c\/strong\u003e commercial packaged rooftop unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If your system has multiple control-circuit loads (economizer, humidifier, etc.), confirm 40VA is sufficient for your configuration. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you order — reach out today and get this shipped to your door fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909704536435,"sku":"CARRIE-C50A302752-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909704569203,"sku":"CARRIE-C50A302752-TRANSFORMER-HT01BD236-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-HT01BD236_57f15bf4-9034-4fa7-9463-5e3ca5259ab5.jpg?v=1782940425","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a302752-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}