{"product_id":"carrier-c4850c50zn070200-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZN070200 — Ships Today","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C4850C50ZN070200\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM replacement control transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50ZN070200\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage control circuit components. When this transformer fails, the entire control circuit goes dark — your thermostat shows nothing, the system won't respond to any call for heating or cooling, and no fault codes can even be generated. It is often the first component to inspect when a system appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Designed to OEM factory tolerances | Direct drop-in replacement for part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This genuine Carrier OEM transformer is wound and insulated to exact factory specifications, ensuring reliable 24V output under full control circuit load. Generic transformers frequently under-perform at rated VA, causing nuisance lockouts and premature control board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to confirm 24V output after installation. Label all wiring connections before removal.\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 stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for Carrier model \u003cstrong\u003eC4850C50ZN070200\u003c\/strong\u003e. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping means your repair doesn't wait.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909770826099,"sku":"CARRIE-C4850C50ZN070200-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909770858867,"sku":"CARRIE-C4850C50ZN070200-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_fadeffe9-2147-454e-9df3-c7a2e9fa0d32.jpg?v=1782939084","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zn070200-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}