{"product_id":"carrier-ph13nb02500gaaaa-transformer-h4oyjb","title":"OEM Carrier 24V Control 40VA Transformer for PH13NB02500GAAAA Heat Pump","description":"\u003cdiv class=\"product-content\"\u003e\n\u003ch1\u003eOEM Carrier 24V Control Transformer for PH13NB02500GAAAA Heat Pump\u003c\/h1\u003e\n\u003cp\u003eThe control transformer steps your home's 208\/230V line voltage down to the 24VAC that powers the thermostat, control board, contactor coil, and safety switches on your Carrier PH13NB02500GAAAA. When it fails, the entire low-voltage side goes dead: the thermostat screen is blank, the system won't respond to any call for heat or cool, the contactor won't pull in, and you may smell a burnt-electrical odor from a shorted, overloaded transformer. Intermittent operation or a transformer that's hot to the touch signals it is on the way out.\n\nThis OEM transformer matches the factory primary voltage taps (208\/230V) and the 24VAC secondary at the correct VA rating (commonly 40VA) needed to carry the contactor and board loads without sagging. Mounting-foot pattern, lead colors, and terminal layout match the original for a direct replacement.\n\nWhy OEM matters: an undersized aftermarket transformer with too few VA can't hold 24V under inrush when the contactor energizes, causing the controls to drop out or chatter; cheap windings run hot and fail early. Matching the VA rating and primary taps is essential — the wrong tap either under-powers the controls or cooks the secondary.\n\nInstallation difficulty: 2 of 5. Tools: 1\/4\" nut driver, wire strippers, and a multimeter to confirm 24V on the secondary. Check for a shorted contactor coil before installing the new transformer, or it will fail again immediately. SAFETY: kill the breaker to the unit before wiring — the primary side carries lethal 240V line voltage.\n\nShips same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model PH13NB02500GAAAA. Always verify the part number against your unit's data plate before ordering.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose OEM?\u003c\/h2\u003e\n\u003cp\u003eOEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.\u003c\/p\u003e\n\u003ch2\u003eShipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641922343283,"sku":"CARRIE-PH13NB02500GAAAA-TRANSFORMER-HT01AW229","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641922376051,"sku":"CARRIE-PH13NB02500GAAAA-TRANSFORMER-HT01AW229-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-HT01AW229_ef7d1141-513c-4030-a518-0220766ff6c7.jpg?v=1782898068","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph13nb02500gaaaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}