How to pressure wash with low water pressure?

Pressure washing is the fastest way to clean your turf or exterior walls. It’s much cheaper than repainting and if done periodically can extend the durability of surfaces. Pressure washers for home use are now readily available. But one of the problems many faces is due to the low water pressure. A pressure washer needs some minimum amount of water pressure in order to generate enough pressure. In this article, we will outline how to pressure wash with low water pressure.

The first and foremost solution is to use a booster pump. It can increase the overall water pressure in your home and thus will solve the low water pressure issue. It is also very important to check whether you have adequate water supply to use a booster pump.

How much water pressure do you need for a power washer?

The pressure washer creates its own pressure for pressure washing. Most of the home water pipes will provide around 40-50 psi of water pressure. the minimum required water pressure for power washing will be around 20 psi. So in most cases, the water pressure can work with your pipe water pressure.

But another important parameter you should monitor is the Gallons Per Minute (GPM). It is simply the measure of how much water (in Gallons) is available per minute. A steady and uninterrupted water flow is a must for a pressure washer. In fact, this is more important than the water pressure. Most household pressure washers will work well with around 2 – 3 GPM. In my experience, most water suppliers have more than enough water flow than that. Also if you have a storage tank then it’s better to always start cleaning with a full tank.

How do you increase water pressure on a pressure washer?

Sometimes even though you have enough water pressure at home the output of the pressure washer is low. Most of the time it is due to the selection of nozzles. The nozzles are color-coded according to the angle at which it is spread. For example, a red color nozzle means 0 angles. It will concentrate the full pressure of the washer to a single point. This is the nozzle that should be used to generate the full power of the washer. So you should refer to the manual and find the angles generated by different types of nozzle angles and use the one most suitable for your job.

Best pressure washer for low water pressure

Choosing the best pressure washer is a tough job. And especially to choose one where the water pressure is low. In this case, it is better to first read through the specifications provided by the manufacturer. They will list the minimum value of water pressure and water flow (GPM) in the product specs. You can choose one with low required values and have enough output pressure values.

Here are some of the pressure washers we found that suit these criteria.

  • Sun Joe SPX3000 2030 Max PSI 1.76 GPM 14.5-Amp Electric High Pressure Washer: The requirement of water flow is 1.75 GPM and so can be used when the water flow rate is low.
  • Greenworks 1500 PSI 1.2 GPM Electric Pressure Washer, GPW1502: The GPM requirement is only 1.2 . But the output pressure produced is 1500 PSI .

The above are two of them but always evaluate your requirement. Some of the key things you need to ask are:

  1. Output Pressure
  2. GPM Requirement.
  3. Minimum water pressure required.

Final Words.

The pressure washers usually do not require that much water pressure to work. They can produce enough pressure with a good adequate water flow. The water flow is the main thing that is required by the washer. You have to provide an adequate water supply for the machine.

In rare cases where the water pressure is too low, you can use a booster pump which will increase the overall water pressure. Another thing you can consider if you have a water tank is to increase the height of the water tank position. Even a small increase in the tank height will have a great effect on increasing the water pressure. We provde some suggestions in buying the pressure washer for low pressure which you can use.

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