{"product_id":"carrier-upflow100fauac14a-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer P201-35150 for UPFLOW100FAUAC14A","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer P201-35150 for Model UPFLOW100FAUAC14A\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier UPFLOW100FAUAC14A\u003c\/strong\u003e upflow gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers the thermostat, control board, gas valve, and all low-voltage safety circuits. When it fails, the entire control circuit goes dark — your thermostat goes blank, the furnace ignores calls for heat, and nothing responds. Replacing it with the correct OEM part restores full system operation immediately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Factory-matched wire leads | Designed for continuous duty in enclosed furnace cabinets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-original Carrier transformer engineered to exact VA and voltage tolerances for the UPFLOW100FAUAC14A. Generic transformers often run undersized VA ratings, causing chronic overloads, nuisance trips, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label or photograph existing wiring connections before removal. Verify 24V output at secondary leads with a multimeter after install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eUPFLOW100FAUAC14A\u003c\/strong\u003e upflow gas furnace. Always verify the 40VA rating and 120V\/24V configuration on your unit's data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640237707635,"sku":"CARRIE-UPFLOW100FAUAC14A-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640237740403,"sku":"CARRIE-UPFLOW100FAUAC14A-TRANSFORMER-P201-35150-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-P201-35150_b8ac1994-066c-44fa-be7a-8eaefed2f87b.jpg?v=1775016672","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow100fauac14a-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}