{"product_id":"carrier-c4850c50ak04061-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50AK04061 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C4850C50AK04061\u003c\/h1\u003e\u003cp\u003eThis OEM replacement control transformer is the factory-specified unit for the \u003cstrong\u003eCarrier C4850C50AK04061\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal used by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dark — the thermostat becomes unresponsive, the system will not call for heating or cooling, and no safety safeties can trip or reset. It is often the first component to check when a system is completely non-responsive but line voltage is confirmed present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance specs for this unit. Undersized or off-tolerance generic transformers can overheat, trip thermal cutoffs prematurely, or fail to sustain voltage under load — leaving you with an intermittent fault that is difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, wire nuts or terminal connectors, multimeter to confirm 24V output after installation. Label or photograph all wiring before disconnecting.\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\u003eC4850C50AK04061\u003c\/strong\u003e packaged unit. Verify OEM part number HT01BD236 against your unit's data plate or existing transformer label before ordering. If you are unsure of fitment, our parts team can confirm compatibility before you place your order — same-day shipping on all in-stock items.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909828497779,"sku":"CARRIE-C4850C50AK04061-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909828530547,"sku":"CARRIE-C4850C50AK04061-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_a5775dcb-2862-4872-a1a7-444f2051454c.jpg?v=1782938880","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50ak04061-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}