{"product_id":"carrier-upflow100uaac14-transformer-fnyqxl","title":"OEM Carrier Transformer 50VA 120\/240V–24V for UPFLOW100UAAC14","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer (P201-35150) for Model UPFLOW100UAAC14\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier UPFLOW100UAAC14\u003c\/strong\u003e air handler. Its job is critical: it converts incoming line voltage (120\/208\/240 VAC) down to safe 12\/24 VAC to power the system's control board, thermostat, and all low-voltage control circuits. When this transformer fails, the entire control circuit goes dark — you'll see a blank thermostat, no response to heat or cool calls, and potentially tripped secondary fuses. Replacing it with the correct OEM part restores factory-rated power delivery and protects your downstream components from voltage irregularities that generic units can introduce.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary: 120\/208\/240 VAC | Secondary: 12\/24 VAC | 60 Hz | Single phase | CSA listed | Part # P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances required by the Carrier UPFLOW100UAAC14 control board. Undersized or out-of-tolerance generic units can cause nuisance tripping, control board damage, or premature transformer burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker and verify zero voltage before disconnecting. Tools needed: flathead and Phillips screwdriver, multimeter, wire nuts or terminal connectors. Label all low-voltage wires before removal. Always verify secondary output voltage (24V) after installation before restoring full system power.\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\u003eUPFLOW100UAAC14\u003c\/strong\u003e air handler. Verify your unit's data plate primary voltage configuration (120V or 240V) before ordering to ensure correct tap selection. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640235970931,"sku":"CARRIE-UPFLOW100UAAC14-TRANSFORMER-P201-35150","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640236003699,"sku":"CARRIE-UPFLOW100UAAC14-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_41f79606-09cd-4be6-867d-2763e164bad6.jpg?v=1782942968","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow100uaac14-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}