The gpm rating like psi varies from model to model though they usually stick to a low figure.
Pressure washer gpm vs psi.
A gas powered pressure washer with a higher psi may be as much as 2 8 gpm.
The pressure put out by a power washer is measured in psi pounds per square inch and the psi requirements can vary based on what you re aiming to clean.
Electric pressure washers typically range from 1 600 psi to 2 300 psi gas pressure washers range from 2 700 psi to 4 400 psi.
Psi tells you the maximum force the water is going to hit your surface with.
Every pressure washer and power washer comes with two numbers.
Smaller pressure washers 1 000 psi to 1 700 psi will have a low gpm.
Getting the job done faster also means saving fuel so not only can a good pressure washer save you time it can also save you money.
The higher the product of gpm and psi the higher the cleaning efficiency.
Likewise water pressure washers with 5 000 psi and 3 0 gpm has 15 000 cleaning units.
However without water pressure is useless and this is where gpm gallons per minute comes into play.
Higher pressure means more cleaning force.
For example a pressure washer with 2 000 psi and 3 0 gpm has 6 000 cleaning units.
There are exceptions to every rule but if you choose a pressure washer that provides a gpm in these ranges you should be completely satisfied by the results.
Many pressure washers calculate cleaning power by cu or cleaning units which is the psi number multiplied by the gpm number.
As a tip do also consider some of the terminology such as gallons per minute gpm measurement to compute cleaning units cu the cleaning efficiency.
A pressure washer with 3000 psi and 2 0 gpm has 6000 cleaning units 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.
An electric pressure washer in this psi range is typically going to be around 1 5 gpm.
When is gpm more important than psi.
It is said in the pressure washing industry that the pressure psi does the cleaning but the water flow gpm cleans it faster.
Gpm is usually more important to contractors than psi.
Though psi is important you can t rely on it alone.
Read this article to find out what are our top choices of electric pressure washers.
For example it ll take a lot less pressure to clean dust and salt from your vehicle than it will take to clean oil stains from your garage floor.
While this is an important factor to consider it is important to note that a consumer should still examine the specific psi and gpm since a unit with 3000 psi and 2 0 gpm carries 6000 cu while a unit with 2000 psi and 3 0 gpm has the same cu.
