{"product_id":"carrier-c48a506064-transformer-h301d7","title":"OEM Carrier Transformer 40VA 24V for C48A506064 — HT01BD702","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C48A506064 — Part# HT01BD702\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C48A506064\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V AC to power the control circuit, including the thermostat, contactor coil, and all low-voltage safety controls. When this component fails, the entire control system goes dark — the thermostat loses power, the unit won't respond to any call for heating or cooling, and you may see a blown fuse on the control board. If nothing works and you've ruled out the thermostat, this transformer is the next component to test.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory OEM part number HT01BD702 | Engineered to meet original Carrier performance tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer. Generic replacements may use undersized VA ratings or inferior insulation, leading to premature burnout under normal HVAC load cycles — especially in packaged units running in high-demand environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire labels or tape for identification. Photograph all wiring before removal. Reconnect primary and secondary leads carefully, matching wire colors and terminals exactly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship the same business day from our HVAC parts warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC48A506064\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltage on the data plate or old component label before ordering. Our parts specialists are available to confirm fitment — reach out before you buy if you have any questions. \u003cstrong\u003eIn stock and ready to ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909725147507,"sku":"CARRIE-C48A506064-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909725180275,"sku":"CARRIE-C48A506064-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_04c74af6-8aae-4902-ada5-42c8a4720d61.jpg?v=1782942519","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a506064-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}