A power washer is a cleaning tool that uses high-pressure water spray to remove dirt, grime, mold, and other debris from surfaces. It typically consists of a motor, a pump, and a nozzle, which work together to create a powerful stream of water. Power washers are commonly used for cleaning driveways, decks, patios, and vehicles, making them a popular choice for both homeowners and professionals. These machines come in various sizes and power levels, with some designed for light-duty tasks and others for heavy-duty cleaning. Users can often adjust the pressure settings and switch nozzles to suit different surfaces, ensuring effective cleaning without causing damage.