{"product_id":"carrier-py3gpaa60115aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V for PY3GPAA60115AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V–24V for Model PY3GPAA60115AA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part #HT01BD209) is the factory-specified 40VA step-down transformer for the \u003cstrong\u003eCarrier PY3GPAA60115AA\u003c\/strong\u003e packaged HVAC unit. It converts 208\/240V line voltage down to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coils, gas valve solenoid, and control board. When this transformer fails, the entire control circuit goes dark: the thermostat loses power, the system will not respond to calls for heating or cooling, and in some cases a shorted secondary winding will trip a fuse or breaker on the control board. Replacing a failed transformer is one of the most impactful and cost-effective repairs in HVAC service.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V Primary | 24V Secondary | 40VA rated | 50\/60Hz | Class 2 control transformer | OEM part #HT01BD209 | Replaces legacy part numbers HT01BD207, HT01CN232, and 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact factory VA and voltage tolerances. Generic transformers frequently under-deliver VA capacity, causing nuisance shutdowns, overheating, and premature failure of downstream control boards and contactors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (verify 0V before touching terminals), wire labels or camera to document wiring. Reconnect primary wires first, then secondary. Confirm 24V output with a meter before closing the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse — order before 3 PM local time for guaranteed same-day dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier model PY3GPAA60115AA\u003c\/strong\u003e packaged gas\/electric units. Cross-references to part numbers HT01BD207, HT01CN232, and 9076-00 — confirm your existing transformer's primary voltage (208\/240V) and VA rating (40VA) on the data plate before ordering. Our fitment team is available to verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640432775539,"sku":"CARRIE-PY3GPAA60115AA-TRANSFORMER-HT01BD209","price":87.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640432808307,"sku":"CARRIE-PY3GPAA60115AA-TRANSFORMER-HT01BD209-GEN","price":77.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_84de8cd2-f3b9-4d44-b994-7ab529af6980.jpg?v=1775025702","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gpaa60115aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}