{"product_id":"carrier-upflow100fauhac14-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer 24V Control Circuit — UPFLOW100FAUHAC14","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer P201-35150 for Model UPFLOW100FAUHAC14\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier UPFLOW100FAUHAC14\u003c\/strong\u003e upflow air handler. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat circuit, control board, and all safety relays. When it fails, the entire control circuit goes dark — your thermostat becomes unresponsive, the system won't call for heat or cooling, and no error codes are generated because there's simply no power to produce them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rated | Class 2 control circuit transformer | Factory-matched OEM replacement for part number P201-35150\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer meets Carrier's exact VA rating and insulation class. Undersized or off-brand transformers frequently trip on thermal overload or fail to sustain 24V under full relay load, causing nuisance lockouts and premature board damage.\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 screwdriver, multimeter, wire nuts or terminals. Verify primary and secondary voltage with your multimeter after install before re-energizing the full system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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\u003eUPFLOW100FAUHAC14\u003c\/strong\u003e upflow air handler. Always verify the 120V primary \/ 24V secondary \/ 40VA specification against your unit's wiring diagram or data plate before ordering. Our fitment team is available to confirm compatibility — reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640237248883,"sku":"CARRIE-UPFLOW100FAUHAC14-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640237281651,"sku":"CARRIE-UPFLOW100FAUHAC14-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_a19fb369-e8c1-4821-9dd3-9bd52b5750b6.jpg?v=1775016485","url":"https:\/\/nationalhvacparts.com\/products\/carrier-upflow100fauhac14-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}