{"product_id":"carrier-py3gna060115nb-transformer-h30291","title":"OEM Carrier Transformer 40VA 120V–24V for PY3GNA060115NB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model PY3GNA060115NB\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part# \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier PY3GNA060115NB\u003c\/strong\u003e gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage safety circuits. When this part fails, the entire control circuit goes dark — the system will not call for heat, the thermostat display may go blank, and no components will respond. A failed transformer is often identified by measuring 0V AC at the secondary terminals with line voltage confirmed at the primary.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary | 24V secondary | 40VA rated | Single-phase | Meets OEM factory tolerances for the PY3GNA060115NB platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part (HT01BD209), wound to exact VA rating and insulation class. Generic transformers may be under-rated in actual VA output, causing overheating or nuisance tripping of the built-in thermal fuse under normal load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and confirm zero voltage before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wiring before disconnecting from terminal block. Standard wire-nut or terminal connections; no soldering required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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 OEM replacement for the \u003cstrong\u003eCarrier PY3GNA060115NB\u003c\/strong\u003e packaged gas\/electric unit. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Have a question about 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":62640464593267,"sku":"CARRIE-PY3GNA060115NB-TRANSFORMER-HT01BD209","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640464626035,"sku":"CARRIE-PY3GNA060115NB-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_ca7625a0-f5b5-4079-8aa9-ec850c852b40.jpg?v=1775041426","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna060115nb-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}