{"product_id":"carrier-py3gna042060na-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V–24V for PY3GNA042060NA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V to 24V — Model PY3GNA042060NA (HT01BD209)\u003c\/h1\u003e\u003cp\u003eThis genuine OEM control transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GNA042060NA\u003c\/strong\u003e packaged HVAC unit. The transformer steps down line voltage (208\/230V) to the 24V control circuit voltage that powers your thermostat, control board, gas valve, and every other low-voltage component in the system. When this transformer fails, the entire control circuit goes dead — you'll see a blank thermostat, no response to calls for heat or cooling, and potentially a tripped or open secondary fuse. It is almost always the first component to check when nothing in the system responds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage 208\/230V | Secondary voltage 24V | Power rating 40VA | Frequency 50\/60 Hz | OEM Part # HT01BD209 | Also replaces HT01BD207, HT01CN232, 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 VA and voltage tolerances. Generic transformers often run hot under full control-circuit load, shortening lifespan and risking nuisance fuse trips on the 24V secondary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, wire stripper, multimeter. Label or photograph all wire connections before removing the old transformer. Verify secondary output reads ~24–28V AC after installation before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 Direct OEM replacement for Carrier model \u003cstrong\u003ePY3GNA042060NA\u003c\/strong\u003e packaged units. Also compatible with other Carrier, Bryant, and Payne units specifying HT01BD207, HT01CN232, or 9076-00. Always verify your unit's data plate voltage requirements before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy — ships same day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640478650739,"sku":"CARRIE-PY3GNA042060NA-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640478683507,"sku":"CARRIE-PY3GNA042060NA-TRANSFORMER-HT01BD209-GEN","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_305f3505-b60c-403b-9ac4-2f9696da8f72.jpg?v=1775025495","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna042060na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}