{"product_id":"carrier-yac3680yac107c-transformer-fnyqxl","title":"OEM Carrier Transformer for YAC3680YAC107C | Genuine OEM Part","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier Transformer for YAC3680YAC107C | Genuine OEM Part\u003c\/h1\u003e\n\u003cp\u003eThe control transformer steps your Carrier YAC3680YAC107C rooftop unit's incoming line voltage down to the low-voltage 24VAC that powers the thermostat, contactor coil, control board, and safety circuits. Almost every command in the system depends on it. When a transformer fails — usually from a shorted secondary or an overloaded control circuit — the entire low-voltage side goes dead: a blank thermostat, no response on a heat or cool call, a contactor that won't pull in, and sometimes a faint burning smell or a popped inline fuse. A transformer that fails open leaves a unit with line power that does absolutely nothing.\n\nSpecs: This is a Class II control transformer matched to your unit's primary voltage (commonly 120\/208\/240V multi-tap) with a 24VAC secondary, sized to the OEM VA rating (typically 40VA) so it carries the contactor, board, and accessory load without overheating.\n\nOEM vs Generic: VA capacity and winding quality are critical. Undersized generic transformers run hot, sag under load, and fail early — and an under-rated secondary can't reliably pull in the contactor. The OEM transformer is wound to the exact VA and tap configuration Carrier specified for this model.\n\nInstall difficulty: 3\/5. Tools: 1\/4\" and 5\/16\" nut driver, insulated screwdriver, multimeter (to confirm 24V output and check the primary fuse), and wire nuts. #1 safety warning: KILL the disconnect and breaker first — the primary side carries full line voltage. Verify your incoming voltage matches the correct primary tap before wiring.\n\nShips same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model YAC3680YAC107C. Always verify the part number against your unit's data plate before ordering.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose OEM?\u003c\/h2\u003e\n\u003cp\u003eOEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.\u003c\/p\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640197042547,"sku":"CARRIE-YAC3680YAC107C-TRANSFORMER-P201-35150","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640197075315,"sku":"CARRIE-YAC3680YAC107C-TRANSFORMER-P201-35150-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-P201-35150_cb7b7ed5-9501-4dab-bd90-c2eb6cbde673.jpg?v=1782943986","url":"https:\/\/nationalhvacparts.com\/products\/carrier-yac3680yac107c-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}