{"product_id":"carrier-py2pnb024040nc-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY2PNB024040NC","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V — Model PY2PNB024040NC\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD209) is the factory-specified 40VA step-down transformer for the \u003cstrong\u003eCarrier PY2PNB024040NC\u003c\/strong\u003e packaged unit. It converts 208\/240V line voltage down to the 24V AC signal that powers your thermostat, control board, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dead — your thermostat goes blank, the system won't respond to any commands, and no heating or cooling stage will activate. A blown transformer is also often the first sign of a downstream short in your low-voltage wiring.\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\/60Hz | OEM part #HT01BD209 | Factory-matched electrical characteristics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, wound to exact VA and voltage tolerances. Generic transformers frequently run hot under sustained load and can fail prematurely, taking control boards with them — an expensive mistake on a packaged unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching terminals). Label all 24V secondary wires before disconnecting. Typical swap time is 20–30 minutes for an experienced technician.\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 for the Carrier \u003cstrong\u003ePY2PNB024040NC\u003c\/strong\u003e packaged unit. Always verify input voltage and VA rating on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640553001331,"sku":"CARRIE-PY2PNB024040NC-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640553034099,"sku":"CARRIE-PY2PNB024040NC-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_71b8f88b-87eb-47fe-a38e-7311bd4a6f66.jpg?v=1782942283","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb024040nc-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}