{"product_id":"carrier-c4850c48zg070600-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C4850C48ZG070600","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C48ZG070600\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C4850C48ZG070600\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required to power the thermostat, control board, contactor coil, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat goes blank, the system makes no response to any call for heating or cooling, and the contactor will not energize. It is one of the first components to check when nothing works at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Single-phase | Class 2 output | OEM part number HT01BD236 — factory tolerance matched for Carrier packaged systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA capacity and insulation class for your unit. Undersized or off-tolerance generic replacements can overheat, blow the fuse repeatedly, or deliver unstable 24V output that causes nuisance lockouts across multiple components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (verify 0V before touching terminals). Photograph all low-voltage wiring connections prior to removal. Secure wire nuts firmly on all splices after installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC4850C48ZG070600\u003c\/strong\u003e packaged unit. Always verify primary voltage, secondary voltage, and VA rating on your unit's data plate before ordering to ensure proper fitment. Our parts specialists are available to confirm compatibility before you buy — same-day shipping means you're back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909861953907,"sku":"CARRIE-C4850C48ZG070600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909861986675,"sku":"CARRIE-C4850C48ZG070600-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_148d3b85-a1f5-4171-82bb-c3606e5619b2.jpg?v=1782940107","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zg070600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}