{"product_id":"carrier-py2pnb024060ab-transformer-h30291","title":"OEM Carrier Transformer 40VA 120V-24V for PY2PNB024060AB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V–24V for Model PY2PNB024060AB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY2PNB024060AB\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, the entire system becomes unresponsive: no thermostat display, no staging, no communication between components. It is one of the first parts to check when a unit shows zero control-side activity despite confirmed line voltage at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: HT01BD209 | Factory-matched construction for Carrier packaged systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact VA and impedance tolerances. Generic transformers may be under-rated for VA load, causing overheating, nuisance tripping of the internal thermal fuse, or unstable 24V output that damages control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power (line and low-voltage disconnect) before proceeding. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers, wire labels. Photograph all wiring connections before removal. Confirm secondary output voltage (should read 24–28V AC under load) after install.\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 Engineered specifically for the \u003cstrong\u003eCarrier PY2PNB024060AB\u003c\/strong\u003e packaged unit. Always verify your existing transformer's primary\/secondary voltage and VA rating against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640550347123,"sku":"CARRIE-PY2PNB024060AB-TRANSFORMER-HT01BD209","price":35.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640550379891,"sku":"CARRIE-PY2PNB024060AB-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_5a51a644-57ad-440e-8bb3-3813ccfaa83a.jpg?v=1775041289","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb024060ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}