{"product_id":"carrier-c4850c50z8090610-transformer-h302a1","title":"OEM Carrier 40VA Transformer 120V-24V for C4850C50Z8090610","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C4850C50Z8090610\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified unit for the \u003cstrong\u003eCarrier C4850C50Z8090610\u003c\/strong\u003e packaged HVAC system. The transformer steps down line voltage (120V) to the 24V signal required by your thermostat, contactor coil, and control board. When this component fails, the entire low-voltage control circuit goes dead — the thermostat goes blank, the system stops responding to calls for heating or cooling, and no fault codes appear because the board itself has no power to operate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory-matched impedance and thermal protection | OEM part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD236 transformer is wound to Carrier's exact VA rating and thermal cutout spec. Undersized or off-brand transformers can overdraw current, trip repeatedly, or cause nuisance lockouts — especially in multi-stage or communicating systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify voltage is absent before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note existing primary and secondary wire connections before removal. Restore power only after all connections are secure and insulated.\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 Designed for the Carrier \u003cstrong\u003eC4850C50Z8090610\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltage on the unit's data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909784097139,"sku":"CARRIE-C4850C50Z8090610-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909784129907,"sku":"CARRIE-C4850C50Z8090610-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_14d68a80-9d68-4161-9073-e76404f53000.jpg?v=1782899579","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50z8090610-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}