{"product_id":"carrier-py3pna042060na-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PNA042060NA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD209 for Model PY3PNA042060NA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer for the \u003cstrong\u003eCarrier PY3PNA042060NA\u003c\/strong\u003e packaged unit. The transformer steps down 208\/240V line voltage to the 24V AC signal that powers your thermostat, contactor coils, and all low-voltage control logic. When this transformer fails, the entire control circuit goes dark — the thermostat goes blank, the system refuses to start, or a fuse repeatedly blows on the secondary side. Replacing it with the correct OEM part (HT01BD209) ensures the factory-rated 40VA capacity is restored and no downstream components are starved of proper control voltage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA power rating | 208\/240V primary input | 24V secondary output | 50\/60 Hz compatible | Direct OEM replacement for Carrier part # HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA tolerances, protecting sensitive control boards and relays. Generic units often run under-rated, causing nuisance trips, overheating, and premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label all wires before disconnecting. Verify 24V output with a multimeter before re-energizing the full system.\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 replacement for Carrier model \u003cstrong\u003ePY3PNA042060NA\u003c\/strong\u003e packaged units. Verify your existing transformer's primary voltage (208\/240V) and VA rating (40VA) on the unit data plate before ordering. Need fitment help? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640386376051,"sku":"CARRIE-PY3PNA042060NA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640386408819,"sku":"CARRIE-PY3PNA042060NA-TRANSFORMER-HT01BD209-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-HT01BD209_58c8a066-9e23-41d2-8a5c-444a814e0b66.jpg?v=1782942401","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna042060na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}