Looking to back up essential elements of your business Consider the Protector Series QS gaseous generator line. These units powers sensitive business technologies and appliances during power outages, providing profit protection for businesses. Generac's Protector QS series offers benefits that competitors can't match. Low-RPM liquid-cooled engine for additional power, but extra-quiet operation and reduced fuel consumption. Installation flexibility and cost reduction. Sophisticated, yet intuitive controls. The best liquid cooled engine packs more power into a smaller footprint - ideal when space is a premium. The neutral styling, color and small footprint fits unobtrusively into landscaping.