The Home Spot

Can You Run A Pressure Washer Without Water

You might be asking yourself if you can run a pressure washer without water, and the answer is that it’s not a good idea.

In order to use a pressure washer, water is essential. Running a pressure washer without water can damage equipment and cause injuries. There are methods to avoid damaging your house or yourself, though.

Can a Pressure Washer Be Operated Dry?

In theory, a pressure washer may function without water. However, it will not be very effective, and you will need to use a lot of force to complete the job. You will also need to use a lot of detergents if you choose this method because water is needed to help dissolve the dirt off your house or car. If you want your pressure washer to work at maximum capacity, ensure you have plenty of water in its tank before starting any cleaning tasks!

Reasons Why Using a Pressure Washer Without Water Is a Bad Idea

No pressure washer should be run without water. This is because a pressure washer’s purpose is to clean. Therefore it may be unsafe and unhealthy.

Using a pressure washer cools the engine, preventing overheating. Without water, engines can overheat more rapidly and burn out more quickly.

Water lubricates components to delay wear (which would mean replacing them sooner). Without appropriate lubrication, moving components will grind against each other and wear out quicker than they typically would (meaning: every time you turn on your machine).

Water helps eliminate filth and grime from surfaces when used in cleaning solutions, and people who use them know how crucial it is. These are two key components in any successful cleaning process: removing dirt before disinfecting afterward (i.e., cleaning then disinfecting, which means having a way to get rid of first after initial contact between surfaces being cleaned versus the device doing most work while touching surfaces closely enough).

Is It Bad To Run a Power Washer Without Water?

Using a power washer without water is not recommended. The pump will overheat, burn out, and leave you with a hefty repair expense because the seals will deteriorate.

Similarly, a brushless motor can be harmed by being run dry.

Do not run a pressure washer without water in the system.

Without water, a pressure washer will overheat and malfunction. The pressure washer will be damaged by overheating and may cause damage to the machine.

If you continue to machine with no water, you will damage the surface being cleaned.


To sum it up, you should never run a pressure washer without water in the system. This can cause damage to your equipment and could even be dangerous if oil or other chemicals are present on the surface you’re trying to clean. If you need to clean something quickly before having time to fill the tank with water, then connect an external water supply via a garden hose or suction hose/bucket combination.

Trisha Mae Raymundo
Trisha Mae Raymundo

Senior Writer and Editor of The Home Spot.