{"product_id":"carrier-py3pna030060na-transformer-h30291","title":"OEM Carrier Transformer 40VA 24V for PY3PNA030060NA — HT01BD209","description":"\u003ch1\u003eOEM Carrier Control Circuit Transformer 40VA for Model PY3PNA030060NA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY3PNA030060NA\u003c\/strong\u003e fan coil\/air handler system. The transformer steps down line voltage (120V) to the 24V AC signal that powers your entire control circuit — including the thermostat, contactors, and control board. When this part fails, nothing works: the system will be completely unresponsive at the thermostat with no heating, cooling, or fan operation. A failed transformer is often confirmed by measuring 0V on the secondary (24V) side with a multimeter while line voltage is present at the primary.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary input | 24V AC secondary output | 40VA rating | Factory OEM-matched terminals and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 is wound to Carrier's exact VA rating and insulation class. Under-rated generic transformers run hot, trip thermal cutoffs prematurely, and fail within one season — especially under full relay load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before replacing. Tools needed: flat-head and Phillips screwdriver, multimeter, wire nuts or spade connectors. Label all wires before disconnecting. Verify 24V output after installation before closing the panel.\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 the direct factory replacement for \u003cstrong\u003eCarrier PY3PNA030060NA\u003c\/strong\u003e. Always verify primary voltage and VA rating on your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — contact us with your full model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640393879923,"sku":"CARRIE-PY3PNA030060NA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640393912691,"sku":"CARRIE-PY3PNA030060NA-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_0b21d108-ae10-49e5-9a17-6e72dbc85f72.jpg?v=1782942674","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna030060na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}