{"product_id":"carrier-c4850c48ay06061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C4850C48AY06061","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C4850C48AY06061\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier C4850C48AY06061\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, contactor coil, and all low-voltage control circuit components. When this part fails, the entire control circuit goes dead — the thermostat goes blank, the contactor never pulls in, and the system will not respond to any call for cooling or heating. A failed transformer is often the first diagnosis when nothing in the system appears to work despite power being present at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 transformer | OEM part number HT01BD236 | Factory-matched electrical rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic transformers may be under-rated in VA output, causing premature burnout under normal control circuit loads — particularly on systems with multiple low-voltage accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Confirm 24V output at secondary terminals after install before restoring system power. Label all wires before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC4850C48AY06061\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility prior to purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909872341363,"sku":"CARRIE-C4850C48AY06061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909872374131,"sku":"CARRIE-C4850C48AY06061-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_9d415238-b02a-4a8b-8248-7e6fa2b0538e.jpg?v=1782940068","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48ay06061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}