{"product_id":"carrier-c48a603064-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for C48A603064","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD702 for Model C48A603064\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 C48A603064\u003c\/strong\u003e packaged unit. It steps down line voltage (120V) to the 24V signal voltage required by your thermostat, contactor coil, and control board. When this transformer fails, the entire low-voltage control circuit loses power — the result is a completely unresponsive system: no thermostat display, no contactor engagement, and no heating or cooling operation whatsoever.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary input | 24V secondary output | Class 2 transformer | Direct OEM replacement for part number HT01BD702\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to exact VA and voltage tolerances for the C48A603064 control circuit. Undersized or off-tolerance generic transformers can overheat, trip thermal cutoffs, or fail to supply adequate current to the contactor coil — leading to repeat failures and possible board damage.\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, needle-nose pliers, wire stripper, multimeter. Label all 24V and 120V wiring before disconnecting. Confirm incoming line voltage and polarity before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC48A603064\u003c\/strong\u003e packaged unit. Before ordering, verify your existing transformer's VA rating and primary\/secondary voltages on the data plate or unit wiring diagram. If your system shows tripped transformers repeatedly, inspect the low-voltage circuit for shorted wiring before installing the new unit. Ready to ship today — order by 3PM for same-day dispatch.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909724688755,"sku":"CARRIE-C48A603064-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909724721523,"sku":"CARRIE-C48A603064-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_568da31b-a8cc-4950-a457-a0531e2e7644.jpg?v=1782940255","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c48a603064-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}