There are some jobs that can’t be done without a pressure washer, and some jobs that it just makes easier to finish. There are pressure washers on the market for home users and professionals, for delicate, detailed cleaning and for high-powered dirt obliteration. Be careful when selecting a pressure washer; a model that has too much power can damage the surfaces that you are trying to clean. A little research will help you choose the best pressure washer for your home.

PSI, GPM and CU: Learn the Acronyms
When shopping for pressure washers, the first obstacle you’ll encounter is acronyms. PSI stands for Pounds per Square Inch, and it tells you the amount of pressure that a pressure washer exerts. PSI is the best gauge of how effective a pressure washer is at breaking down stains or debris.

GPM stands for Gallons Per Minute. GPM is a measure of the quantity of water that the pressure washer sprays and tells you how quickly the pressure washer removes loosened debris—higher GPMs result in the ability to clean larger surface areas in less time.

Some manufacturers combine these ratings to determine the Cleaning Unit, or CU, which is sometimes written as UCE. Manufacturers determine the CU by multiplying the PSI by the GPM; the resulting figure represents the amount of cleaning capability promised by the pressure washer.

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