{"product_id":"carrier-c50a602564-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A602564","description":"\u003ch1\u003eOEM Carrier Control Circuit Transformer 40VA for Model C50A602564\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 C50A602564\u003c\/strong\u003e commercial packaged unit. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including the thermostat, control board, contactor coil, and all safety switches. When the transformer fails, the entire control circuit loses power: the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and nothing works. It is often the first component to check when a unit is completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary voltage: 120V | Secondary voltage: 24V | OEM part number HT01BD702 | Factory-matched windings and core for reliable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact specifications, ensuring stable 24V output under full load. Generic transformers frequently deliver inconsistent voltage, causing nuisance lockouts, erratic thermostat behavior, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Always photograph existing wiring before disconnecting. Confirm primary and secondary wiring polarity matches the original installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship 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\u003eC50A602564\u003c\/strong\u003e commercial rooftop\/packaged unit. Verify the 40VA rating and 120V primary voltage on your unit's wiring diagram or data plate before ordering. If you are unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909665837427,"sku":"CARRIE-C50A602564-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909665870195,"sku":"CARRIE-C50A602564-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_ef09c1f3-da9e-4389-8089-fe45916dbb8b.jpg?v=1782940657","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a602564-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}