Kärcher Residential - Online Help

» Shortcut: Looking for a replacement part for your Kärcher product?

Unsure of the part number? Please contact one of our nationwide authorized distributors:

BuyKarcher.com: 800-387-3394
RJ Bowers Distributors: 800-383-6584
PressureParts.com: 800-999-2245
OrderTree.com: 877-500-7499

To find a local service center, please search our Service Center Locator

	How do I test my water source to see if I have sufficient water flow to operate a pressure washer?

Article You should check to see if you will have enough water supply prior to considering using a pressure washer. Most pressure washers have a minimum water flow requirement (2.5 GPM for gas pressure washers, 1.5 GPM for electric pressure washers) enabling the unit to perform at its listed pressure.

A. You will need a 2 gallon bucket (for electric pressure washers) or a 5 gallon bucket (for gas pressure washers)
B. A watch or a clock.
C. A garden hose that is only 25' long and 3/4" diameter.

1. Connect the garden hose to the water supply. (faucet/spigot)
2. Open the faucet completely.
3. Fill the bucket up for one minute.

2 Gallon Bucket: If you can fill the 2 gallon bucket at least 3/4 full of water in less then one minute, the water source is sufficient. If you were unable to do this, you may not have enough gallons per minute (GPM) to run your unit.

5 Gallon Bucket: If you can fill the 5 gallon bucket at least 1/2 full of water in less then one minute, the water source is sufficient. If you were unable to do this, you may not have enough gallons per minute (GPM) to run your unit.