{"product_id":"generac-gp15500efi-portable-generator-15-500w-electric-start-with-cosense","title":"Generac GP15500EFI Portable Generator - 15,500W Electric Start with COsense","description":"\u003ch1\u003eGenerac GP15500EFI Portable Generator - 15,500W Electric Start with COsense\u003c\/h1\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003e\n  The Generac GP15500EFI is a high-output portable generator built for homeowners, contractors, and anyone who demands serious, reliable power. Powered by a Generac 816cc OHVI engine with Electronic Fuel Injection (EFI), it delivers 15,500 running watts and 19,300 starting watts - enough to back up an entire home or power a demanding jobsite. The EFI system optimizes fuel delivery automatically, resulting in better efficiency, easier starts, and up to 11 hours of runtime at 50% load from a 14.2-gallon fuel tank.\n\u003c\/p\u003e\n\u003cp\u003e\n  Safety and convenience are built into every corner of this machine. COsense Technology continuously monitors carbon monoxide levels and automatically shuts the generator down if dangerous concentrations are detected - a feature that can save lives. TruePower Technology keeps total harmonic distortion below 5%, making it safe to run sensitive electronics, appliances, and power tools without worry. Electric start with an included battery means you are never cranking a pull cord under stress, and the heavy-duty never-flat wheel kit keeps the 420-lb unit mobile around your property or worksite.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCOsense Technology:\u003c\/strong\u003e Automatically detects hazardous carbon monoxide levels and shuts down the generator to protect users from CO poisoning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e816cc Generac OHVI Engine with EFI:\u003c\/strong\u003e Electronic Fuel Injection optimizes fuel delivery for better performance, efficiency, and cold-weather starting compared to carbureted engines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e15,500 Running Watts \/ 19,300 Starting Watts:\u003c\/strong\u003e Enough power for whole-home backup or heavy-duty jobsite use when paired with a transfer switch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTruePower Technology:\u003c\/strong\u003e Less than 5% Total Harmonic Distortion (THD) - safely powers sensitive electronics, appliances, and tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e11-Hour Runtime at 50% Load:\u003c\/strong\u003e Large 14.2-gallon fuel tank with integrated fuel gauge for extended, uninterrupted operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectric Start - Battery Included:\u003c\/strong\u003e Hassle-free push-button starting; no pull cord required. Battery ships with the unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHomelink Manual Transfer Switch Compatible:\u003c\/strong\u003e Pairs with a Generac Homelink transfer switch to provide whole-home backup power as an alternative to a standby generator.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardened 1-1\/4\" Steel Tube Cradle:\u003c\/strong\u003e Heavy-gauge steel frame provides lasting structural strength and durability in rugged conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Never-Flat Wheels:\u003c\/strong\u003e Flat-free wheel kit ensures the generator stays mobile even when stored for long periods.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-Oil Pressure Shutdown:\u003c\/strong\u003e Automatically cuts the engine before oil starvation can cause internal damage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHour Meter with Maintenance Resets:\u003c\/strong\u003e Tracks engine hours so you never miss an oil change or scheduled service interval.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eShips free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eGP15500EFI Portable Generator\u003c\/li\u003e\n  \u003cli\u003eBattery (for electric start)\u003c\/li\u003e\n  \u003cli\u003eNever-flat wheel kit\u003c\/li\u003e\n  \u003cli\u003eOwner's Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy You'll Love It\u003c\/h2\u003e\n\u003cp\u003e\n  Generac is the number-one selling brand of home backup generators in the United States, and the GP15500EFI represents the top of their portable lineup. Whether you are preparing for hurricane season, protecting your home during winter storms, or powering through a demanding renovation project, this generator delivers the wattage and runtime to get the job done. The EFI engine starts reliably in cold or hot conditions without the carb-flooding headaches of traditional portable generators, and the COsense safety system gives your family an extra layer of protection that older machines simply cannot offer. The Homelink transfer switch compatibility means this unit can genuinely serve as a whole-home backup solution at a fraction of the cost of a permanent standby system. Built tough, loaded with smart features, and backed by Generac's reputation for dependability - the GP15500EFI is a generator you can count on when it matters most.\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cdiv class=\"custom-product-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eView Product Specs\u003c\/strong\u003e\u003c\/summary\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eGP15500EFI (G0077050)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eGenerac 816cc OHVI with EFI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStarting Method\u003c\/th\u003e\n\u003ctd\u003eElectric Start (Battery Included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRunning Watts\u003c\/th\u003e\n\u003ctd\u003e15,500 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStarting Watts\u003c\/th\u003e\n\u003ctd\u003e19,300 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFuel Tank Capacity\u003c\/th\u003e\n\u003ctd\u003e14.2 gallons (54 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRuntime at 50% Load\u003c\/th\u003e\n\u003ctd\u003e11 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOil Capacity\u003c\/th\u003e\n\u003ctd\u003e2.2 qt (2.1 L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e39.5 in (100.3 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e30.9 in (78.55 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e36.5 in (92.81 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e420 lb (191 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Voltage\u003c\/th\u003e\n\u003ctd\u003e120\/240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTHD (TruePower)\u003c\/th\u003e\n\u003ctd\u003eLess than 5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003ctd\u003eHardened 1-1\/4\" Steel Tube Cradle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransfer Switch Compatible\u003c\/th\u003e\n\u003ctd\u003eYes - Homelink Manual Transfer Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCOsense CO Protection\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWiFi\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFuel Type\u003c\/th\u003e\n\u003ctd\u003eGasoline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eManuals \u0026amp; Guides\u003c\/h2\u003e\n\u003cdiv class=\"custom-product-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\u003cstrong\u003eView All Documents\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/7705-gp15500efi-portable-generator-spec-sheet.pdf?v=1785965298\" target=\"_blank\" title=\"Product Spec Sheet\"\u003eProduct Spec Sheet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/gp15500efi-gp18000efi-owners-manual.pdf?v=1785965301\" target=\"_blank\" title=\"Owner's Manual\"\u003eOwner's Manual\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/3-year-limited-warranty-portable-generators_e1367870-040c-4ef9-b96c-ecf415ad7a22.pdf?v=1785965305\" target=\"_blank\" title=\"3-Year Limited Warranty\"\u003e3-Year Limited Warranty\u003c\/a\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cdiv class=\"custom-product-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is COsense Technology and why does it matter?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eCOsense is Generac's built-in carbon monoxide detection system. It continuously monitors CO levels near the generator and automatically shuts the unit down if dangerous concentrations are detected. Carbon monoxide is an odorless, colorless gas that can be fatal within minutes in enclosed or semi-enclosed spaces. COsense adds a critical layer of protection beyond standard CO detector alarms, especially for users running a generator close to a home or garage during a storm.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between running watts and starting watts?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eRunning watts (15,500W) represent the continuous power the generator can sustain. Starting watts (19,300W) are the brief surge of extra power the generator produces to start motor-driven appliances like refrigerators, air conditioners, and sump pumps - which require more electricity to start than to run. When calculating your power needs, always account for the starting wattage of your largest motor-driven appliance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this generator power my entire house?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eYes - with the right setup. The GP15500EFI is compatible with Generac's Homelink Manual Transfer Switch, which allows you to connect the generator to your home's electrical panel and power selected circuits throughout the house. At 15,500 running watts, it has enough capacity to run most home essentials simultaneously, including HVAC, refrigerator, sump pump, lighting, and more. A licensed electrician should install the transfer switch.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy choose an EFI (Electronic Fuel Injection) generator over a carbureted one?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eEFI engines automatically adjust the fuel-to-air mixture based on conditions, which means more reliable cold starts, better fuel efficiency, and fewer maintenance issues related to stale fuel or clogged carburetors. For a generator that may sit unused for months before being called into emergency duty, EFI is a significant reliability advantage over a traditional carbureted engine.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the generator ship assembled, and is freight delivery required?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eThe GP15500EFI weighs 420 lbs, so it typically ships on a freight pallet. Delivery will be to your curb or garage, depending on the freight carrier's service level. A lift gate is usually included, but you will need to move the unit into final position yourself using the included never-flat wheel kit. Contact us at service@omahasportsandgames.com to confirm delivery details for your address.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat warranty does this generator come with?\u003c\/summary\u003e\n\u003cp class=\"faq-content\"\u003eThe GP15500EFI is backed by Generac's 3-Year Limited Warranty for residential use. The warranty covers defects in materials and workmanship. Please refer to the warranty document linked above or contact Generac directly for full terms and conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Generac","offers":[{"title":"Default Title","offer_id":55608003330353,"sku":"7705","price":5949.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1724\/7681\/files\/gp15500efi_main-image.jpg?v=1785965309","url":"https:\/\/omahasportsandgames.com\/products\/generac-gp15500efi-portable-generator-15-500w-electric-start-with-cosense","provider":"Omaha Sports \u0026 Games","version":"1.0","type":"link"}