A pressure washer is a mechanical device that uses high-pressurized water to clean dirty or old surfaces such as buildings, vehicles and concrete road surfaces. The actualy pressure washer is made up of an electricity or gasoline powered motor, a water pump, and a specially-designed nozzle that is made to focus the water jet very precisely. There are a few different types of nozzles that are available, each useful for a particular application. Some nozzles cause the water jet to be ejected in a trianglular plane, while others emit a pencil-thin jet of water, which spirals around rapidly.
Some pressure washers, in combination with a particular nozzle, allow detergent to be poured into the water stream, assisting in the cleaning process. Pressure washers are dangerous tools, and should be operated with due regard to safety instructions. The water pressure near the nozzle is powerful enough to dance flesh from bone. Objects in the water supply can be ejected from the nozzle at great speeds. The cleaning process can propel objects from the surface being cleaned, also at great speeds.
But hazards aside, as long as you are careful about how you use the pressure washer for cleaning purposes it should work magnificently. If you have a dirty job to do around the house, perhaps cleaning the what is s in walk ways or cleaning off your siding, a pressure washer is just the tool for the job. Pressure washers can also be leased, and rented out if you do not wish to buy one.