Hot water power washers use specific fuels to heat water in the burner system. The most common options include diesel, kerosene, propane (LPG), natural gas, and electric heating elements. Diesel and kerosene dominate mobile units, while propane and natural gas suit stationary setups, and electric models avoid combustion fuels entirely. This guide breaks down each fuel type with clear pros, cons, and use cases. You will learn how...