{"product_id":"carrier-c4850c50zw105610-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZW105610 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C4850C50ZW105610\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50ZW105610\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V AC signal that powers your control board, thermostat, contactor coil, and all safety circuits. When this transformer fails — due to a short, overload, or age — absolutely nothing in the control system responds: the thermostat goes blank, the unit won't call for heating or cooling, and in some cases a fuse on the board may blow simultaneously. Replacing this component is often the first step in diagnosing a completely unresponsive system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary: 120V AC | Secondary: 24V AC | VA Rating: 40VA | OEM Part Number: HT01BD236 | Factory-matched for Carrier C4850C50ZW105610 packaged systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the factory control board. Generic units may output slightly off-spec voltages that cause intermittent lockouts, nuisance tripping, or premature control board failure — making OEM the only recommended choice for long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box and confirm zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, and needle-nose pliers. Note wire color and terminal positions before disconnecting the old unit. Installation takes approximately 20–30 minutes for a qualified technician.\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 — order by 3 PM local time for guaranteed same-day dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC4850C50ZW105610\u003c\/strong\u003e packaged unit. Always verify your existing transformer's primary\/secondary voltage and VA rating against your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909767188851,"sku":"CARRIE-C4850C50ZW105610-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909767221619,"sku":"CARRIE-C4850C50ZW105610-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_d8709a66-c69d-447b-ad6a-80b0365b5bde.jpg?v=1782939089","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zw105610-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}