The Generac QuietSource 22 kW, Generac Guardian 45 kW and Cummins RX60 Power Connect are highly rated home generators, according to Electric Generators Direct. The Briggs & Stratton 76107 25 kW is another top model.
The Generac QuietSource 22 KW is a liquid-cooled whole-home generator also suitable for small commercial buildings. It has a 4-cylinder engine and corrosion-resistant aluminum shell. This heater has a large, tri-lingual digital display for service and maintenance information.
The Cummins RX60 Power Connect is a sturdy, liquid-cooled generator with onboard self-diagnostic capability. Its noise-dampening aluminum cabinet withstands winds up to 150 mph. This generator has a two-year warranty.