{"product_id":"carrier-py4gpaa60115aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V for PY4GPAA60115AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY4GPAA60115AA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e), the factory-specified replacement for the \u003cstrong\u003eCarrier PY4GPAA60115AA\u003c\/strong\u003e packaged HVAC system. The control transformer steps down high-voltage line power (208\/240V) to the safe 24V signal used by your thermostat, control board, and all low-voltage components. When this transformer fails, the entire control circuit loses power — the thermostat goes dark, the system stops responding to commands, and you may notice a faint buzzing or burning smell near the air handler or packaged unit cabinet.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary input | 24V secondary output | 40VA capacity | 50\/60 Hz | Class 2 control transformer | Direct OEM replacement for Carrier PY4GPAA60115AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA and voltage tolerances, protecting sensitive control boards and thermostats from under-voltage or overcurrent damage. Generic units often run outside rated VA, which can trip breakers or shorten board life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (verify 0V before touching terminals), needle-nose pliers, and wire labels or masking tape. Photograph all wiring connections before removal. Confirm primary and secondary wire leads match your unit's wiring diagram.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; Shipping:\u003c\/strong\u003e 1-year OEM manufacturer warranty against defects. In stock and 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\u003ePY4GPAA60115AA\u003c\/strong\u003e packaged HVAC unit. Also replaces legacy Carrier part numbers HT01BD207, HT01CN232, and 9076-00 — verify your existing part number and unit data plate before ordering. Not sure if this fits? Contact our parts team and we'll confirm fitment before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640311927155,"sku":"CARRIE-PY4GPAA60115AA-TRANSFORMER-HT01BD209","price":52.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640311959923,"sku":"CARRIE-PY4GPAA60115AA-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_4477c869-865f-49b8-8455-93838cf4830b.jpg?v=1775025755","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py4gpaa60115aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}