Question: what is gpm pressure washer?
Answer: PSI (Pounds per Square Inch) refers to the amount of cleaning pressure that the unit can produce. GPM (Gallons per Minute) is the amount of water that is coming from the unit. ... A pressure washer with 2000 PSI and 3.0 GPM also has 6000 Cleaning Units but the rinsing power is greater than the stripping power.