{"product_id":"carrier-py3gna030060na-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3GNA030060NA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD209 for Model PY3GNA030060NA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GNA030060NA\u003c\/strong\u003e HVAC system. The transformer steps down line voltage from 208\/240V to the 24V signal required to power your thermostat, control board, and all low-voltage components. When this part fails, the entire control circuit goes dead — the thermostat loses power, no calls for heating or cooling are processed, and the system will not respond. If your system is completely unresponsive despite 240V line power being present, a failed transformer is a primary suspect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary input | 24V secondary output | 40VA power rating | 50\/60 Hz | OEM part number HT01BD209 | Direct factory replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 is wound to exact Carrier factory tolerances, ensuring stable 24V output under full load. Generic transformers can sag under load voltage, causing intermittent lockouts, nuisance tripping of limit switches, or erratic thermostat behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and verify with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter. Note and photograph all wiring connections prior to removal. Always confirm 24V output after installation before closing the unit.\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 as a direct OEM replacement for Carrier model \u003cstrong\u003ePY3GNA030060NA\u003c\/strong\u003e. Verify your existing transformer's primary voltage, secondary voltage, and VA rating against the data plate on your unit before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640483533171,"sku":"CARRIE-PY3GNA030060NA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640483565939,"sku":"CARRIE-PY3GNA030060NA-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_e9ac4b6d-28d9-4316-ada0-c7835070fc2d.jpg?v=1782942338","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna030060na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}