Does a Longer Hose Reduce Water Pressure?

Assuming a best-case scenario – working on flat ground and normal operating conditions – you typically won't lose much pressure as you increase the length of hose that you use. For instance, on a 3/8-inch hose with a 3 gallon/minute flow, the loss of pressure per 100 feet is about 50 PSI.

Does hose length affect pressure washer?

The pressure washer is always connected to the garden hose. So you need the length of hose to get you to the place where you want to use the washer, from the where your water supply spigot is. Do you find this helpful? There is no set length required for the garden hose that would connect from your spigot to the unit.

How does hose size affect pressure?

Your thumb restricts the flow of water through the hose. With your thumb over the end, the water is flowing much slower through the hose, and as a result, there is a lot less pressure loss due to friction. So with less pressure being lost in the hose, the pressure at the end of the hose where your thumb is increases.