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How to pressure wash with low water pressure?

Fact Checked By Daniel Wood | Post Updated On: May 15, 2023

Pressure washing with low water pressure? Don’t worry, as this is not something uncommon. Many reasons can cause this to happen, especially the nozzles that tend to get blocked or worn over time. 

A low water pressure strains our pressure washers. Not only that, but it also leads to reduced cleaning power and less productivity. Now let’s discuss ways to make the most out of our pressure washers when the water pressure is not high.

Using a low GPM pressure washer:

The very first thing you can do is invest in a low GPM pressure washer. A pressure washer’s primary function is to increase the water pressure from the source, often reaching thousands of pounds per square inch (PSI). A low GPM pressure washer can make the user’s job easier when dealing with low-pressure water situations. 

To produce higher-pressure water quickly, choosing a pressure washer that consumes less than 3 gallons per minute (GPM) is recommended.

Adjusting the pressure-reducing valve:

To improve the effectiveness of a pressure washer with low water pressure, slightly adjusting your pressure gauge can be helpful. The pressure gauge is typically located inside the house near the water meter. However, it’s important to only make slight increments to the pressure, as a high-pressure reading can damage the water outlets in your house.

Check for leaks:

Leaks can often cause low water pressure, making it a frustrating experience for new pressure washer owners. To avoid this, it’s essential to identify any leaks, as they can prevent the pressure washer from functioning effectively. To prevent leaks from occurring, it’s recommended to use the pressure washer within the recommended pressure range, as specified in the user manual.

Installing a booster pump:

Installing a booster pump greatly increases the water pressure of a pressure washer. All a user has to do is install the booster pump on the water supply line, which will help increase the water flow to the pressure washer. 

But you’ll have to ensure the booster pump is compatible with your pressure washer. Installing it correctly is another thing that you should consider. My best advice would be to consult a professional or seek help from the user manual before you go about buying a boost pump. 


In conclusion, low water pressure can be a common problem for pressure washer users. However, several ways exist to address this issue and make the most out of your pressure washer. Investing in a low GPM pressure washer, adjusting the pressure-reducing valve, checking for leaks, and installing a booster pump are all effective ways to improve the water pressure and cleaning power of your pressure washer. It’s essential to follow the user manual and seek professional help when necessary to ensure the safe and efficient operation of your pressure washer. By using these tips, you can overcome low water pressure and achieve a more effective and productive pressure washing experience.

About Daniel Wood

Daniel has completed his graduation mechanical engineering from a reputed university in US. He worked as a technical engineer in a pressure washer manufacturing plant for four years. He has a great passion for mechanical devices and has opened a workshop where he does research on various machines in his leisure time. His high interest in technology made him an expert in commercial and residential pressure washers.

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