Typical cleaning supplies such as mops and brushes are useful for many different types of cleaning, but they simply cannot do the job for all surfaces. If you are trying to clean a driveway, deck, road, building exterior, or vehicle, you may need to use a power washer. A power washer, also known as a pressure washer, is a machine that uses high-pressure water flow to clean tough surfaces.
A pressure washer consists of a motor, either gas or electric, connected to a high-pressure pump that draws water from a reservoir and pushes it out under pressure exceeding 2,000 pounds per square inch through a hose tipped with a metal wand and nozzle. The particular type of cleaning would determine which nozzle or tip used. The tips range from a zero degree which could put a hole in a deck, siding or a foot, to a soak tip you could drink out of. Its the same pressure coming out of the machine.
Pressure washing with an appropriate cleaning detergent is a safe and effective way to clean dirt, grime and mildew from the exteriors of houses, decks and other outdoor surfaces.