High-pressure washers are primarily composed of two parts: a booster pump and a power drive. They operate by using the power drive of the water pressure pump to generate high-pressure water for cleaning the surface of objects, thereby removing and washing away dirt to achieve the goal of cleaning the surface.

A high-pressure washer is a cleaning equipment that uses the force of water to remove dirt when the pressure exceeds the adhesion between the dirt and the surface of the object. The high-pressure water stream can typically clean away dirt, but for stubborn oil stains, a detergent may be needed. Otherwise, the foam generated by the water pressure is sufficient to carry away most dirt.