{"product_id":"carrier-upflow100hcu12a-transformer-fnyqxl","title":"OEM Carrier Transformer 50VA 120\/240-24V for UPFLOW100HCU12A","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model UPFLOW100HCU12A\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM step-down transformer for the \u003cstrong\u003eCarrier UPFLOW100HCU12A\u003c\/strong\u003e upflow air handler. The transformer converts incoming line voltage (120\/208\/240 VAC) down to a safe 24V AC to power your system's control board, thermostat wiring, and low-voltage accessories. When this transformer fails, the entire control circuit loses power — resulting in a completely unresponsive system, a blank thermostat, or a blower that runs non-stop without any heating or cooling command. Replacing it with the correct OEM part restores factory-spec voltage delivery and protects downstream electronics.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz | Single-phase | CSA Listed | OEM Part # P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a Carrier factory-authorized Totaline part built to exact VA and voltage tolerances. Generic transformers may be under-rated in VA, causing thermal overload and premature failure — particularly in systems with multiple 24V accessories (humidifiers, zone boards, ERVs).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage before working. Tools needed: multimeter, flathead and Phillips screwdrivers, wire nuts or spade terminals. Label all low-voltage wires before disconnecting. Confirm secondary voltage output with a meter after installation before restoring system power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eUPFLOW100HCU12A\u003c\/strong\u003e upflow air handler. Always verify your unit's data plate primary voltage (120V or 240V) matches this transformer's dual-primary configuration before installation. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — ships same day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640236298611,"sku":"CARRIE-UPFLOW100HCU12A-TRANSFORMER-P201-35150","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640236331379,"sku":"CARRIE-UPFLOW100HCU12A-TRANSFORMER-P201-35150-GEN","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-P201-35150_e9500cdd-7998-4a77-bcce-6feb42afa87a.jpg?v=1782942853","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow100hcu12a-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}