Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Whats most important: HP, PSI or GPM?

April 26, 2017gpm HP PSI

0

Posted

Whats most important: HP, PSI or GPM?

1 Answer

0

Posted

First of all, it’s important to understand what each of these acronyms means. HP stands for horsepower, PSI for pounds per square inch and GPM for gallons per minute. The HP of a pressure washer is divided up to produce both the pressure at which the water is released (PSI) and the number of gallons that are released (GPM). For example, a 2 HP motor can produce 2.1 GPM at 1600 PSI or it can produce 3.0 GPM at 1100 PSI. Cleaning power is a function of both volume and pressure. Size does matter. When selecting a pressure washer, first determine the minimum PSI you need to break the bond between the dirt and the surface you are cleaning. The chart on this page can help you, or you may wish to contact your dealer if you need help.