{"product_id":"carrier-py1ppb036090nbaa-transformer-h30291","title":"OEM Carrier Transformer 40VA 120V-24V for PY1PPB036090NBAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V–24V for Model PY1PPB036090NBAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY1PPB036090NBAA\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to low-voltage control circuit power (24V AC), energizing your thermostat, control board, contactors, and safety circuits. When this transformer fails, the entire control circuit goes dark — the thermostat shows no response, the system won't call for heating or cooling, and diagnostic LEDs on the control board go completely dark. A failed transformer is one of the first components to check in a complete no-power control circuit situation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Factory-matched OEM tolerances for the PY1PPB036090NBAA platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 is wound and rated to exact Carrier factory specifications, ensuring the correct VA load capacity for all downstream control components. Generic alternatives may be under-rated in VA, leading to premature burnout or nuisance tripping of the thermal fuse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off all power to the unit before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wires). Photograph all wire connections before removal. New transformer installs in minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Carrier \u003cstrong\u003ePY1PPB036090NBAA\u003c\/strong\u003e packaged unit. Always verify your existing transformer's primary\/secondary voltage and VA rating on the data plate or original component label before ordering. Our fitment team is available to confirm compatibility before you buy — reach out via chat or phone.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640798499187,"sku":"CARRIE-PY1PPB036090NBAA-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640798531955,"sku":"CARRIE-PY1PPB036090NBAA-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_0357fef6-15e7-449d-8eab-abfc9a828e34.jpg?v=1775041286","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppb036090nbaa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}