i need to buy a pressure washer to start a small after-school business to earn some extra cash. i will need a gas pressure washer with enough power to clean driveways, walkways, fences, stone, brick, oil stains from garages, ext. what is the minimum PSI i need to be able to do these jobs effectively?
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The more pressure you can get, the better. But also watch water volume too. The cleaning power of a pressure washer can be found by multiply pressure (psi) by water volume (GPM). Some manufacturers offer a lot of pressure with very little volume.
That said, 3000 psi is a good all around pressure. You can always lower the pressure by the type of nozzle that you use.
Hope this helps.
as long as its a 5 horsepower or better it will be fine
1000-1200 psi