{"product_id":"carrier-py3ppa030060aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V for PY3PPA030060AA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/240V to 24V for Model PY3PPA030060AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PPA030060AA\u003c\/strong\u003e HVAC system. The transformer steps down the 208\/240V line voltage to the 24V signal required to power the control board, thermostat, and all low-voltage safety circuits. When it fails, every controlled function in the system goes dark — the thermostat goes blank, the system won't respond to calls for heating or cooling, and no low-voltage components will energize. If your system appears completely unresponsive despite 240V line power being present, a failed transformer is one of the first components to check.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input (Primary) Voltage: 208\/240V AC | Output (Secondary) Voltage: 24V AC | Frequency: 50\/60 Hz | Power Rating: 40VA | OEM Part #: HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory OEM unit — same winding specifications, insulation class, and VA rating as installed at the factory. Generic transformers often underperform on VA capacity under full load, causing nuisance control dropouts and premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Locate the transformer in the control compartment, photograph all wiring connections, then disconnect and swap. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered to fit the \u003cstrong\u003eCarrier PY3PPA030060AA\u003c\/strong\u003e. Always verify your unit's model and serial number against your data plate before ordering. Not sure it fits? Our parts specialists confirm fitment before you buy — order with confidence and get back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640368025971,"sku":"CARRIE-PY3PPA030060AA-TRANSFORMER-HT01BD209","price":55.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640368058739,"sku":"CARRIE-PY3PPA030060AA-TRANSFORMER-HT01BD209-GEN","price":48.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_8ba06ff3-b80e-4f24-a289-9ec9556b241e.jpg?v=1775025725","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3ppa030060aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}