{"product_id":"carrier-yac48110yac304ac-transformer-fnyqxl","title":"OEM Carrier 40VA Transformer 120V-24V for YAC48110YAC304AC","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V\/24V for Model YAC48110YAC304AC\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) is the factory-specified replacement for \u003cstrong\u003eCarrier YAC48110YAC304AC\u003c\/strong\u003e packaged units. The transformer steps down 120V line voltage to the 24V AC signal required to power thermostats, contactors, control boards, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat loses power, nothing responds to a call for heating or cooling, and fuses may blow repeatedly due to a shorted secondary winding.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: P201-35150 | Factory-matched windings and insulation class\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and tested to Carrier's exact VA rating and insulation spec. Off-brand units often underperform under sustained 24V load, causing nuisance lockouts or premature secondary burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always inspect low-voltage wiring for shorts before replacing — a shorted load will burn out a new transformer just as quickly.\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 warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eYAC48110YAC304AC\u003c\/strong\u003e. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts team confirms compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640189178227,"sku":"CARRIE-YAC48110YAC304AC-TRANSFORMER-P201-35150","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640189210995,"sku":"CARRIE-YAC48110YAC304AC-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_f1e66f01-c2d6-4c09-8ae7-e065af489c41.jpg?v=1775016298","url":"https:\/\/nationalhvacparts.com\/products\/carrier-yac48110yac304ac-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}