{"product_id":"carrier-py3gpaa60090aa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3GPAA60090AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V — Model PY3GPAA60090AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY3GPAA60090AA\u003c\/strong\u003e packaged gas\/electric unit. The transformer steps down 208\/240V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching circuits. When this component fails, the entire control circuit goes dark — resulting in a completely unresponsive thermostat, a blown low-voltage fuse, or a system that won't respond to any call for heating or cooling.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 208\/240V | Output 24V | 40VA power rating | 50\/60Hz | OEM part number HT01BD209 | Factory-matched wire gauge and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM transformer is wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance aftermarket transformers can overheat, sag voltage under load, and cause intermittent control board faults that are notoriously difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, needle-nose pliers, multimeter (to confirm 24V output after installation). Label or photograph all wire connections before removal. Total job time: 20–35 minutes for a qualified technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Verified factory fit for Carrier model \u003cstrong\u003ePY3GPAA60090AA\u003c\/strong\u003e. Always confirm input voltage on your unit's data plate (208V or 240V) prior to ordering — this transformer supports both. Need fitment confirmation before you buy? Our HVAC parts team verifies compatibility on every order. \u003cstrong\u003eOrder by 3PM and your part ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640434184563,"sku":"CARRIE-PY3GPAA60090AA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640434217331,"sku":"CARRIE-PY3GPAA60090AA-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_e51d38df-b33c-41d9-82f7-08176c8d5396.jpg?v=1782942386","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gpaa60090aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}