{"product_id":"carrier-upflow125fau12a-transformer-fnyqxl","title":"OEM Carrier Transformer 50VA 120\/240-24V for UPFLOW125FAU12A","description":"\u003ch1\u003eOEM Carrier Control Transformer 50VA 120\/208\/240V–12\/24V for Model UPFLOW125FAU12A\u003c\/h1\u003e\u003cp\u003eThe \u003cstrong\u003eCarrier P201-35150\u003c\/strong\u003e is the factory-specified step-down transformer for the \u003cstrong\u003eUPFLOW125FAU12A\u003c\/strong\u003e upflow gas furnace. It converts incoming line voltage (120\/208\/240 VAC) down to a safe 12\/24 VAC to power the furnace's control board, thermostat circuit, and all low-voltage components. When this transformer fails, the entire low-voltage control circuit goes dead — resulting in a furnace that won't respond to the thermostat, a completely dark control board, or tripped secondary fuses with no other apparent cause.\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 | Single-phase | 60 Hz | CSA listed | Dimensions: 3.8″L × 3.1″W × 2.2″H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier\/Totaline factory part (P201-35150), wound to exact VA and voltage tolerances. Generic transformers often run outside rated VA, causing nuisance fuse failures and shortened control board life on the UPFLOW125FAU12A.\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 screwdrivers, needle-nose pliers, multimeter. Label or photograph all wire connections before removal. The transformer mounts inside the furnace cabinet and connects to the control board low-voltage harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse — order by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eUPFLOW125FAU12A\u003c\/strong\u003e upflow gas furnaces. Verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us anytime.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640231842163,"sku":"CARRIE-UPFLOW125FAU12A-TRANSFORMER-P201-35150","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640231874931,"sku":"CARRIE-UPFLOW125FAU12A-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_d92210c2-95a0-4758-a871-d3631b8f6ca3.jpg?v=1782942866","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow125fau12a-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}