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Published on Jan 20, 2011
See more: thd.co/gLvHT8 Almost any outdoor cleaning job will go faster with the help of a pressure washer. A pressure washer consists of a motor that powers a pump which increases the pressure of the water coming from your garden hose. The pressure is measured in pounds per square inch, or PSI. The higher the PSI, the greater the force the water pressure is produced. Learn more in this video.