One of the most powerful air-cooled generators on the market today, this unit provides whole house power protection for many homes. In addition to essential circuit coverage, the 20 kW unit can back up multiple air conditioners and remaining rooms in your home like home theaters and offices. Generac's Nexus™ Controller is the most comprehensive available. The dual line, tri-lingual LCD display allows for easy monitoring and management of generator functions including manual/auto/off switch, utility voltage sensing, engine warm-up/cool-down, programmable seven day exerciser, main line circuit breaker, electronic governor and more. Generac’s OHVI® engine was designed specifically for generators. It out performs competitive generator engines with an engine life that is three to four times longer and has a significantly longer period between scheduled maintenance checkups. Aluminum, all-weather enclosure prolongs the life of your generator with corrosion resistant protection from the elements, making it ideal for salt-air coastal climates. Modeled to withstand winds up to 150 mph. A Base fascia comes standard, providing protection against debris and rodents and completing the stylish look of your generator. Simple field conversion from natural gas to LP. TruePower™ Technology provides clean, smooth operation of sensitive electronics and appliances. QuietTest™ Mode for a weekly self-test that runs quieter than other brands. External GFCI Outlet safely provides greater external usability during a power outage. Hour meter monitors run time, providing information to determine maintenance intervals. External "At-a-Glance" indicator lights offer an easy way to tell generator status without opening the generator enclosure. Comes pre-packaged with a 200 Amp service entrance rated Nexus Smart Transfer Switch with digital load management technology, NEMA 3R Rated. Includes a 1 ft. flexible fuel line connector and composite mounting pad. CARB compliant.