Powered pressure washers wash surfaces by applying a
Powered pressure washers wash surfaces by applying a mighty stream of pressurized water. At the outset, you must to know the measurement terms used when describing pressure washers. Pounds per square inch (PSI) is the way water pressure is measured. The greater the PSI, the more muscle the pressure washer will have. Gallons per minute (GPM) describes the amount of water striking the surface you are cleaning. A pressure washer with a higher GPM will take a reduced amount of time to clean surfaces than a model with a lesser GPM. The best pressure washer is usually categorized by its GPM, PSI and its power source whether they are gas or an electric power washer.