{"product_id":"carrier-py1pnb036060nbaa-transformer-h30291","title":"OEM Carrier 40VA Transformer 120V–24V for PY1PNB036060NBAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD209 for Model PY1PNB036060NBAA\u003c\/h1\u003e\u003cp\u003eThis OEM step-down transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PY1PNB036060NBAA\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this part fails, the system becomes completely unresponsive: the thermostat goes blank, the unit won't start, and no error codes are displayed because the control circuit has no power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rated | OEM Part Number HT01BD209 | Factory-matched winding tolerances for stable control voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine OEM Carrier transformer wound to exact factory VA and voltage specifications. Generic transformers may deliver inconsistent output voltage, causing erratic thermostat behavior, contactor chatter, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Always photograph existing wiring connections before removing the old transformer.\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 Designed for the Carrier \u003cstrong\u003ePY1PNB036060NBAA\u003c\/strong\u003e packaged unit. Confirm input\/output voltage and VA rating on your unit's data plate before ordering. Not sure it fits? Contact our HVAC parts specialists — we verify fitment before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640904831347,"sku":"CARRIE-PY1PNB036060NBAA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640904864115,"sku":"CARRIE-PY1PNB036060NBAA-TRANSFORMER-HT01BD209-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_8a06dbc9-77e1-46e4-86da-479bbab56c70.jpg?v=1775016365","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pnb036060nbaa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}