Mistakes to Avoid When Buying a Cordless Pressure Washer

Last Updated on February 26, 2021

Mistakes to Avoid When Buying a Cordless Pressure Washer

Cordless pressure washers can be great but you really need to think about what you are looking for from your pressure washer.

Pressure washers are very handy to have in the garage but each type comes with its pros and cons.

The best thing about having a cordless pressure washer is that they are mobile. They don’t usually require a garden hose and can be run from standing water. They can be great for watering plants or to wash your car.

You need to remember that they aren’t heavy duty and using one for cleaning your patio or driveway is a stupid idea and could take you multiple days. If you are looking for something to clean concrete then a high pressure electric pressure washer would be better suited.

Despite its positives there a few mistakes to avoid when using or looking to buy a cordless electric pressure washer.

Checking The Flow Rate

Some cordless power washers can have up to 5 liters per minute of water flow rate. Meaning that if you arent using a garden hose then you could end up going through buckets of water very quickly.

Some units have built-in water tanks that hold up to 20L of water, but with a flow rate of 5 LPM means you could be filling it up 15 times per hour of use.


Does It Have High Pressure?

The level of pressure you could receive from your cordless pressure washer could disappoint you if you are hoping to get a high pressure machine. Generally, a cordless power washer will have a much lower water pressure than its electric or petrol counterparts.

The water pressure required to wash your car, garden furniture, or watering plants is much lower than what’s required to clean patios or driveways.


What Is The Battery Length?

You need to check the battery length of a single full charge before you purchase your cordless pressure washing unit.

Some pressure washers offer as little as 10 minutes per full charge with a 1.5 hour recharge time! (Shocking I Know) but if that works for your needs then happy pressure washing!

You can of course get multiple batteries but this can increase your initial cost massively. You can get other units that can last up to 50 minutes per full charge which is much better for home maintenance jobs.


Using a Garden Hose?

The hose length you are using if you have a unit that uses a garden hose is an important factor. If your hose length is long then great you can usually reach exactly what you need to.

If you need to use a hose, then you want to aim for having a hose length of at least 30 meters if not higher for best use.

You have to bare in mind that if you are using a pressure washer that incorporates a garden hose then it’s no longer a cordless pressure washer and you might be better suited using an electric pressure washer.


Is The Job You Are Looking To Carry Out Cleaning A Painted Wall?

If you are looking to clean a painted wall, you should consider a few things. Cleaning a painted surface, even with the lowest water pressure can damage the paint and remove it.

You should reconsider cleaning a painted wall with your cordless pressure washer unless you are planning on repainting it.


Using Hot Water

Trying to use hot water in your cordless pressure washer can cause it to break. Most units will only be suitable for water up to 40°C, so although that warm it’s not hot.

Using hot water can seriously damage your pressure washer and you should avoid it, if you have a job that you think would require hot water to clean you can check out our guide on the best hot water pressure washers.



Ultimately, you need to think about the best unit for you and your needs. If you need something with more power, an electric pressure washer might be better.

If you take nothing from this article except some knowledge on mistakes to avoid when buying a cordless pressure washer then I’v done my job.

Make sure you have covered all your points and that a cordless pressure washer is for you before you purchase.

Latest Guides