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Aidan Houde

New member
Hello friends,
I am new in the field of power washing so I want to know some more information about the GPM (Gallons per Minute), If anyone knows then share it with me.


Sterling Rogers

New member
Just remember this.....the higher the GPM the faster you can clean. In other words, you could have two 3500 PSI machines, (one is 3.5 GPM and one is 8 GPM). Your 8 GPM machine will clean way faster than the 3.5 so you're more efficient and since time is money, the higher price of the 8 GPM machine will eventually work in your favor. A lot of people start out with a smaller GPM machine and eventually work up to a larger machine once they start getting bigger jobs. Both will still clean so it's just a matter of how FAST you want to get the job done.

Darren Whitson

New member
Sterling nailed it. Another thing to point out is if you go over 4/5.5 GPM you will need to carry a buffer tank so the PW gets enough water.

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