{"product_id":"carrier-c4850c50aw04061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50AW04061 — Ships Today","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model C4850C50AW04061\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50AW04061\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal required by the control board, thermostat, and all low-voltage control components. When this transformer fails, the entire control circuit loses power — the thermostat goes blank, the system won't respond to any commands, and nothing turns on. It is often the first component to diagnose when a unit is completely unresponsive despite confirmed line voltage at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01BD236 | Factory-matched output for Carrier packaged unit control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, engineered to exact VA and voltage tolerances for your unit. Generic transformers may deliver slightly off-spec output voltage, causing erratic board behavior, nuisance lockouts, or premature control board failure.\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. Confirm 24V output on secondary terminals before reassembling. Always verify wiring connections match original configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed by 3PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for Carrier model \u003cstrong\u003eC4850C50AW04061\u003c\/strong\u003e packaged units. Verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909818372467,"sku":"CARRIE-C4850C50AW04061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909818405235,"sku":"CARRIE-C4850C50AW04061-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_1c579bfa-b035-4086-aa3a-c1ad81f0ac5b.jpg?v=1782938917","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aw04061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}