{"product_id":"carrier-p110100-transformer-112d7n","title":"OEM Carrier 40VA Transformer 120V–24V for P110100 — P201-2201","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 120V–24V for Model P110100\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eP201-2201\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier P110100\u003c\/strong\u003e HVAC system. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage control circuits. When it fails, the entire control system goes dark — the thermostat loses power, relays won't energize, and the system makes no response to any call for heating or cooling. It is often the first component to check when absolutely nothing works.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | OEM part number P201-2201 | Factory-matched output for stable control circuit voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA and voltage tolerances. Undersized or off-spec generic units can sag under load, causing erratic thermostat behavior, nuisance lockouts, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all low-voltage wires before disconnecting. Confirm secondary output reads 24–28V AC with a meter before closing the panel.\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 Designed specifically for the \u003cstrong\u003eCarrier P110100\u003c\/strong\u003e HVAC system using OEM part number P201-2201. Always verify your existing transformer's VA rating and primary\/secondary voltages on the data plate before ordering. If you are unsure about fitment, our parts team is happy to confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909253222771,"sku":"CARRIE-P110100-TRANSFORMER-P201-2201","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909253255539,"sku":"CARRIE-P110100-TRANSFORMER-P201-2201-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-P201-2201.jpg?v=1782899692","url":"https:\/\/nationalhvacparts.com\/products\/carrier-p110100-transformer-112d7n","provider":"National HVAC Parts","version":"1.0","type":"link"}