{"product_id":"carrier-c50a502764-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A502764","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A502764 — Part# HT01BD702\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A502764\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal used by your thermostat, control board, and all low-voltage control components. When it fails, the entire control circuit goes dark — the thermostat goes blank, the system stops responding to calls for heating or cooling, and no fault codes appear because there's no power to generate them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 transformer | Factory-matched impedance and thermal protection — direct OEM replacement for part# HT01BD702\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM unit meets Carrier's exact VA rating and thermal cutout specifications. Generic transformers often run undersized VA capacity, leading to premature failure under normal control-circuit load — especially in multi-stage or heat pump configurations.\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, needle-nose pliers, multimeter (to confirm 24V output after install). Label or photograph all low-voltage wiring before disconnecting. The transformer mounts to the control panel with two screws and uses push-on or screw terminals.\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 specifically for the \u003cstrong\u003eCarrier C50A502764\u003c\/strong\u003e commercial packaged unit. Confirm your existing transformer's VA rating and primary\/secondary voltages from the data plate or wiring diagram before ordering. Our HVAC parts specialists are available to verify fitment — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909672751475,"sku":"CARRIE-C50A502764-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909672784243,"sku":"CARRIE-C50A502764-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_8015077f-1e33-409b-b60f-863cf697c554.jpg?v=1782940590","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a502764-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}