{"product_id":"carrier-py3gna048115ab-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3GNA048115AB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3GNA048115AB\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GNA048115AB\u003c\/strong\u003e packaged unit. The transformer steps down the 208\/240V line voltage to the 24V signal used by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any call for heating or cooling, and no fault codes can even be generated. It is often one of the first components to check when a system shows absolutely no response.\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 | Factory OEM part #HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, wound and rated to exact factory specifications. Generic transformers may carry inconsistent VA ratings or inferior insulation, risking nuisance tripping or premature secondary winding failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to confirm 24V output after install). Label or photograph all wire connections before removing the old transformer.\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 OEM replacement for Carrier model \u003cstrong\u003ePY3GNA048115AB\u003c\/strong\u003e packaged gas\/electric units. Cross-reference part number HT01BD209 against your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640473080179,"sku":"CARRIE-PY3GNA048115AB-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640473112947,"sku":"CARRIE-PY3GNA048115AB-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_01acc7ec-51cc-4b72-ac18-1f12e83e7d8e.jpg?v=1782942359","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna048115ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}