{"product_id":"carrier-py2ppb048090aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V for PY2PPB048090AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY2PPB048090AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY2PPB048090AA\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 208\/240V to the 24V required by the low-voltage control circuit, powering the thermostat, control board, gas valve, and all safety relays. When this transformer fails — due to a short in the secondary circuit, overload, or age — the entire control system goes dark: no thermostat response, no ignition sequence, and no heating or cooling whatsoever.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input voltage: 208\/240V | Output voltage: 24V | Frequency: 50\/60 Hz | Power rating: 40VA | Factory OEM part #HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance aftermarket units can overheat, trip repeatedly, or fail to properly power multi-stage controls — shortening the life of your control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Label all low-voltage wires before disconnecting. Verify fuse on secondary circuit and replace if blown before installing new transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock — ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier PY2PPB048090AA\u003c\/strong\u003e packaged gas\/electric units. Always verify your unit's data plate voltage matches the 208\/240V primary specification before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640509845875,"sku":"CARRIE-PY2PPB048090AA-TRANSFORMER-HT01BD209","price":55.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640509878643,"sku":"CARRIE-PY2PPB048090AA-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_e970b612-cfb9-41da-9da7-f8ede1fd5149.jpg?v=1775025649","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2ppb048090aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}