{"product_id":"carrier-py3gna024060aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V for PY3GNA024060AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3GNA024060AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GNA024060AA\u003c\/strong\u003e HVAC system. Its sole job is to step down the 208\/240V line voltage to the safe 24V signal that powers your thermostat, control board, and every low-voltage component in the system. When this transformer fails — due to electrical surges, short circuits in control wiring, or simple wear — the entire system goes dark: the thermostat loses power, the unit refuses to respond to calls for heating or cooling, and you may hear a faint buzzing or humming from the transformer housing itself.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary | 24V secondary | 40VA rating | 50\/60 Hz | Direct OEM replacement for Carrier PY3GNA024060AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Replaces:\u003c\/strong\u003e HT01BD207, HT01CN232, 9076-00 — this part supersedes all earlier Carrier control transformer revisions listed above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to exact factory tolerances, ensuring a full 24V output under load. Undersized or off-spec generic units can sag below 24V, causing nuisance lockouts, erratic control board behavior, and premature component failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wire connections before disconnecting. Verify 24V output with a multimeter after installation before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePY3GNA024060AA\u003c\/strong\u003e. Verify your unit's data plate shows a 208\/240V primary control circuit before ordering. If you are unsure whether this part fits your specific serial number or configuration, contact our team — we verify fitment before you buy. Order now and get same-day shipping on all in-stock OEM Carrier parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640487891315,"sku":"CARRIE-PY3GNA024060AA-TRANSFORMER-HT01BD209","price":52.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640487924083,"sku":"CARRIE-PY3GNA024060AA-TRANSFORMER-HT01BD209-GEN","price":46.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_8777a550-dab1-41a2-a6eb-ffc5179fd031.jpg?v=1775025667","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna024060aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}