{"product_id":"carrier-c4850c48zw105610-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C4850C48ZW105610 — Ships Today","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C4850C48ZW105610\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C48ZW105610\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuits. When this component fails, the entire control system goes dark — the thermostat becomes unresponsive, the unit will not energize, and no safety or staging functions operate. A failed transformer is often confirmed by measuring 120V on the primary side with zero output on the secondary.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | VA Rating: 40VA | OEM Part Number: HT01BD236 | Factory-matched to Carrier C4850C48ZW105610 electrical specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer delivers precise 24V output within factory tolerance. Generic alternatives may produce voltage irregularities that cause nuisance lockouts, board damage, or premature contactor coil failure — not a place to cut corners on a packaged rooftop unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Document all wiring connections before removal. Verify 24V output after install before reassembling the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 C4850C48ZW105610\u003c\/strong\u003e packaged unit. Cross-reference OEM part number HT01BD236 against your unit's data plate to confirm correct voltage and VA rating before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909846946163,"sku":"CARRIE-C4850C48ZW105610-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909846978931,"sku":"CARRIE-C4850C48ZW105610-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_a60fcab0-0ffa-407c-a64b-2b6493fb309b.jpg?v=1782899103","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zw105610-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}