...come with engines that use fans to force air across the engine for cooling. For most typical homes, air-cooled models provide exceptional value to homeowners interested in backing up critical circuits. Depending on the model, 8, 10, 12, or 16 key circuits in your main distribution panel can be powered by the generator during a power outage. A 20kW air-cooled standby generator offers up to whole-house protection for many homes.
...use enclosed radiator systems for cooling, similar to an automobile. Generally, liquid-cooled engines are used on larger kW generators due the larger engines required for the higher power output. For larger homes or small to medium businesses such as convenience stores, restaurants and offices, the solid, reliable, increased horsepower of an automotive-style, liquid-cooled engine provides more powerful options for critical circuit and entire service back up.