Comparing air-cooled and liquid-cooled generators is like comparing a motorcycle and a car. While a car has a radiator, a motorcycle doesn’t. It uses the passing wind for cooling. An air-cooled generator draws in air to cool its components.
Built for one purpose
Unlike engines manufactured primarily for lawn and garden applications, generator engines are specifically engineered for one purpose. They are engineered to run for the long periods of time required during a severe power outage or on a job site utilizing the same type of pressurized oil lubrication used to give automobile engines long and trouble-free lives.
While air-cooled generators occupy a smaller footprint than liquid-cooled ones, they run at a higher RPM. Because the engine is running at a higher speed, it can be louder than even a larger liquid-cooled generator.
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