{"product_id":"carrier-upflow180fau-14-transformer-fnyqxl","title":"OEM Carrier 50VA Transformer 120\/240-24V — UPFLOW180FAU%14","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model UPFLOW180FAU%14\u003c\/h1\u003e\u003cp\u003eThis factory-authorized OEM step-down transformer (part# P201-35150) is the direct replacement for the \u003cstrong\u003eCarrier UPFLOW180FAU%14\u003c\/strong\u003e furnace. The transformer converts high-voltage line power — 120, 208, or 240 VAC — down to a safe 24V AC signal that powers your system's control board, thermostat, and all low-voltage control circuits. When this component fails, the entire control circuit loses power: your thermostat goes blank, the furnace won't respond to any call for heat, and nothing turns on. If your UPFLOW180FAU%14 is completely unresponsive and you've confirmed 24V is absent at the secondary terminals, this transformer is the first part to test and replace.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50VA rating | Primary voltage: 120\/208\/240 VAC multi-tap | Secondary voltage: 12\/24V AC | 60 Hz | Single phase | CSA listed | Dimensions: 3.8\" L × 3.1\" W × 2.2\" H | Weight: 2.3 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline factory-authorized part. OEM transformers are wound to exact VA and voltage tolerances, protecting downstream control boards. Generic units often run under-rated VA, leading to overheating, nuisance tripping, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and disconnect switch before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 0V before touching terminals and confirm 24V output after installation). Always photograph existing wiring before disconnecting leads. Typically a 20–30 minute replacement for an experienced DIYer.\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 climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eUPFLOW180FAU%14\u003c\/strong\u003e upflow gas furnace. Verify your data plate shows part# P201-35150 or cross-reference your existing transformer's VA rating (50VA) and primary voltage tap (120\/208\/240V) before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before every order — reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640224862579,"sku":"CARRIE-UPFLOW180FAU%14-TRANSFORMER-P201-35150","price":119.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640224895347,"sku":"CARRIE-UPFLOW180FAU%14-TRANSFORMER-P201-35150-GEN","price":105.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_5961409d-5acc-4b1c-bacf-6ee56fbb4342.jpg?v=1775016705","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow180fau-14-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}