{"product_id":"carrier-upflow100fau12a-transformer-fnyqxl","title":"OEM Carrier Transformer 50VA 120\/240-24V for UPFLOW100FAU12A","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer (P201-35150) for Model UPFLOW100FAU12A\u003c\/h1\u003e\u003cp\u003eThis factory-authorized OEM control transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the direct replacement for the \u003cstrong\u003eCarrier UPFLOW100FAU12A\u003c\/strong\u003e upflow air handler. The transformer steps down high-voltage line power — 120, 208, or 240 VAC — to a safe \u003cstrong\u003e12\/24V AC output\u003c\/strong\u003e that energizes your system's control board, thermostat circuit, and low-voltage accessories. When this transformer fails, the entire control circuit loses power: the thermostat goes blank, the system refuses to start, or the unit intermittently drops out — symptoms that are easy to misdiagnose as a board or thermostat failure. Replacing the transformer is the fastest, most cost-effective first step when the low-voltage circuit goes dead.\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 | 60Hz | Single phase | CSA listed | Factory part number P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact factory VA and voltage tolerances. Undersized or off-spec generic transformers can overheat, trip thermal cutoffs, and damage sensitive control boards — costing far more than the transformer itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the breaker before working on the control circuit. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to confirm 24V output after install). Label or photograph all low-voltage wiring before disconnecting terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for the Carrier \u003cstrong\u003eUPFLOW100FAU12A\u003c\/strong\u003e upflow air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our HVAC parts team can confirm fitment — contact us before you buy if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640238854515,"sku":"CARRIE-UPFLOW100FAU12A-TRANSFORMER-P201-35150","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640238887283,"sku":"CARRIE-UPFLOW100FAU12A-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_b2c89f88-e150-4803-a3a9-e585416ade13.jpg?v=1782942843","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow100fau12a-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}