As the #1 selling home standby generator brand . Generac’s 7 .500-Kilowatt Whole Home standby generator is the most affordable . automatic alternative to portable backup power. Features incorporate many of the qualities and reliability of the bestselling Guardian Series . while remaining the most affordable home standby generator available. Significantly quieter than a portable generator . it protects the home’s most essential circuits . like refrigerators . well pumps and select appliances . without having to manually set up during inclement weather . refuel . or run electrical cords.