A pressure or power washer is a high-pressure mechanical sprayer used to remove loose paint, mould, grime, dust, mud and dirt from any surfaces and objects such as concrete, buildings, vehicles and other surfaces. These machines vary in volume and pressure outputs and may be either petrol or electric driven.

Pressure washing is a dangerous activity and should be conducted by an experienced operator. Understanding the dangers of water under extreme pressure and the potential to damage either yourself or the surface you are cleaning during the cleaning process is paramount to safety, environment and the expected outcome of any cleaning task.