How to Prepare a Pressure Washer for Winter

How to Prepare a Pressure Washer for Winter

How to Prepare a Pressure Washer for Winter.

The process of winterizing a pressure washer is simple and only takes a few minutes: add a fuel stabilizer (only for gas-powered pressure washers), clean out the hose to remove any detergent, disconnect everything, cover your pressure washer, and store it in a dry place until the next time it is needed.

How to Get Your Pressure Washer Ready for Winter


Winterizing a pressure washer is important for two reasons: the first is to protect it from temperatures below freezing, and the second is to avoid problems that might result from extended periods of inactivity.

The procedure just takes a few minutes, but it might be the difference between a pressure washer that stays in outstanding condition throughout the winter months and need to replace the washer once spring comes.

The good news is that winterizing your pressure washer is quite easy and just takes a few minutes, so there is really no reason not to do this one easy step.

What Consequences Might Result from the Absence of Winterization?


Even if you are simply going to be putting your pressure washer away for a few weeks, it is still a good idea to winterize it beforehand. If you do not winterize your pressure washer, you run the risk of having some of the following things happen to it:

There is a risk that the pump’s interior seals may dry rot and shatter.
Old gas may become rancid and create rust and corrosion, both of which can choke fuel lines.


Extra water might cause your water hoses to break if it freezes, expands, and then burst.
Mold and mildew might build, which would degrade seals and even clog pipes.
When a pressure washer is used for the first time, there is a risk of surface corrosion on the engine cylinder.


Bear in mind that after just 30 days, gas may get stale, causing havoc on your pressure washer and effectively leaving it worthless. Keep this in mind at all times. And since pressure washer warranties do not cover damage to the machine that is caused by a lack of maintenance, you might lose several hundred dollars or even more if you do not winterize it.

The answer to the question of whether or not you need to winterize your gas or electric pressure washer is that you need to winterize both of them. Every single year, regardless of the source of the pressure washer’s electricity, the device has to be winterized in order to function properly.

Putting away your gas-powered pressure washer for the winter is a breeze.
The following are some of the fundamental stages involved in winterizing a gas-powered pressure washer.

It is important to keep in mind that if the instructions that come with your pressure washer are different in any manner, you should always make sure to follow those instructions instead. Listed below are the primary steps:

You should have both a gasoline stabilizer and antifreeze, which is also known as a pump saver.

Again, if the directions on the packaging of these goods are different from the ones that are provided here, you should always follow the instructions on the packaging.
After adding the fuel stabilizer to the pressure washer, let the engine run for two minutes so that the fuel stabilizer may be distributed evenly throughout the whole system.


Take an empty bucket and fill it up with water from the faucet.


Put your garden hose into position as if you were about to use your pressure washer. Get the hose that delivers the detergent and put it in the bucket of water.

Start the pressure washer and keep pulling the trigger (while using a nozzle designed for low pressure) until all of the detergents have been flushed out of the system.

After turning off the water supply for the garden usage, pull the trigger once more to empty the remainder of the water from the pipes so that the water supply may be turned back on.


Turn off the pressure washer, disconnect all of the hoses, and make sure that all of the components, such as the spray gun, hoses, extensions, and so on, are completely dry before proceeding.

The next step is to follow the directions provided on the pump saver or antifreeze container by the manufacturer and add it to the pump inlet.
Last but not least, ensure that the pressure washer is covered and that it is kept in an area that is clean and dry.


It is much simpler to put away an electric pressure washer for the winter.
To prepare an electric pressure washer for the winter is a piece of cake. It is quicker and less complicated than winterizing a gas-powered pressure washer, and it comprises the stages that are listed below:

the process of winterizing a pressure washer


Get a jar that holds one gallon and pour boiling water into it. Next, depending on how your pressure washer is constructed, you will need to either insert the detergent siphon line into the hot water or pour hot water into the onboard detergent tank.
Put the end of your garden hose into the inlet, and then turn on the water.

After turning on the pressure washer, squeezing the trigger to release pressure, and running the machine for up to two minutes will allow any leftover detergent to be flushed out of the pipes.

Disconnect the garden hose, and then pull the trigger again to empty the system of any lingering water that may have been trapped within. Take off the high-pressure line and unhook the trigger pistol as well as the wand so that they may both fully empty out their contents.


The antifreeze and pump saver should be added to the pump system in accordance with the recommendations provided by the manufacturer.
Put your pressure washer away in a spot that is dry and secure.


Putting Away Your Pressure Washer in the Appropriate Manner


It is essential to the process of winterizing your pressure washer to have a cover for it since it shields the machine from dust, spider webs, rust, other corrosive elements, and most crucially, moisture. Covers are necessary when you have no option but to store your pressure washer outdoors, but even those that are stored inside of sheds and garages should have well-made covers to protect their investment.

If it is at all feasible, you should get a cover that is made out of a fabric like polyester or canvas that has a coating that makes it water-resistant or waterproof. It is possible for covers to either be water-repellent, water-resistant, or waterproof. The ones that are waterproof are the most effective, but if you can’t locate them, you may use the others instead.

You can take measurements of your pressure washer before you go shopping for a cover, but considering that many of these covers are universally sized, it’s possible that this step isn’t really essential. Cover the pressure washer with the cover from a barbeque grill or even just a tarp if you really cannot locate a cover that you like.

A cover that isn’t designed expressly for pressure washers and other instruments is almost always preferable to having no cover at all. This is especially true if you want to keep your pressure washer in an area that is open to the weather, such as outdoors.

In conclusion
It is very important to properly winterize your pressure washer, and the most important thing you need to keep in mind is to make sure that your washer is entirely emptied of all fluids before putting it away for the winter.

Even trace quantities of moisture may wreak havoc on your pressure washer, therefore it is essential to use a stabilizer as well as an antifreeze. Keep in mind that the pressure washer’s greatest foes at this time of year are the low temperatures and the prolonged periods of inactivity that it experiences.

Fortunately, the procedure of winterizing a gas-powered or electric pressure washer often only takes a few minutes to perform, but it will save you a significant amount of money and a lot of difficulties in the long run, every single time.

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