{"product_id":"carrier-humbbsbp2312a-transformer-112d7n","title":"OEM Carrier Transformer 40VA 120V–24V for HUMBBSBP2312A","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V–24V for Model HUMBBSBP2312A\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (Carrier part number \u003cstrong\u003eP201-2201\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier HUMBBSBP2312A\u003c\/strong\u003e whole-home bypass humidifier. The transformer steps down 120V line voltage to the 24V signal required to power the humidifier's control board, solenoid valve, and thermostat interface. When this transformer fails, the entire control circuit goes dead — the humidifier will not respond to humidistat calls, the solenoid won't open, and no indicator lights will illuminate. It's one of the first components to check when nothing works at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 transformer | Factory-matched P201-2201 OEM replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and insulated to Carrier's exact VA and voltage tolerances. Generic transformers frequently run at reduced VA capacity, causing brownouts on the control circuit and premature solenoid valve failure — especially in humid operating environments.\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, wire stripper, multimeter to confirm 24V output after installation. Always label wires before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eHUMBBSBP2312A\u003c\/strong\u003e bypass humidifier. Confirm your unit's data plate lists 120V\/24V transformer requirements before ordering. Cross-references OEM part number \u003cstrong\u003eP201-2201\u003c\/strong\u003e. Have a question about fit? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909317054835,"sku":"CARRIE-HUMBBSBP2312A-TRANSFORMER-P201-2201","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909317087603,"sku":"CARRIE-HUMBBSBP2312A-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_fa5b26a1-abe9-419f-bbf5-3317471e6721.jpg?v=1782941951","url":"https:\/\/nationalhvacparts.com\/products\/carrier-humbbsbp2312a-transformer-112d7n","provider":"National HVAC Parts","version":"1.0","type":"link"}