How To Winterize A Pressure Washer

Man using a pressure washer in colder weather
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How To Winterize A Pressure Washer

When, Why, and How To Winterize A Pressure Washer

If you live in an area with cold winters, it is important to winterize your pressure washer at the end of each season, specifically before the first freeze. Doing so will help protect it from damage and extend the lifespan of your pressure washer. Winterizing a pressure washer is a relatively simple process that can be done in a few steps. It is important to follow the manufacturer's instructions carefully, but in this post we will go over a general overview of the process from a servicing dealer aspect.


Top Reasons Why You Should Winterize Your Pressure Washer:

  • To prevent freezing damage. The biggest risk of not winterizing your pressure washer is freezing damage. Water that is left inside the pump and hoses can freeze and expand, causing cracks and other damage. This can be expensive to repair or replace.
  • To protect against corrosion. Water can also cause corrosion to the internal components of your pressure washer. Winterizing helps to remove any remaining water and protect these components from rust and other damage.
  • To extend the life of your pressure washer. By taking the time to winterize your pressure washer, you can help keep it in good condition and extend its lifespan.
    • Today's fuels can become stale and gum up the engine fuel system much faster than in years past. Gasoline can separate and form deposits in the engine. These deposits can damage the fuel system components and prevent the engine from starting or running properly.

How To Winterize A Pressure Washer:

  1.  Add a fuel stabilizer to the gasoline tank. This will help to prevent the gasoline from going stale or gumming up the fuel system.
    • With the garden hose connected and the water turned on (without the high-pressure hose connected), run the engine for 5 minutes. This allows the fuel stabilizer to coat all of the fuel system components.
    • Important note: The garden hose must be connected and water flowing through the pump during this process or damage can occur.
    • After 5 minutes, turn off the pressure washer and water supply, then disconnect the garden hose from the pressure washer.
  2. Add pressure washer pump guard from Simpson Cleaning to the pump. Pump Guard is a non-toxic antifreeze that is specially formulated for pressure washers. It helps to prevent freezing and corrosion. Follow the manufacturer's instructions for adding the pressure washer pump guard to your pressure washer.
  3. With the on/off switch in the OFF position, spin the engine several times by slowly pulling the starter rope. This will allow the pump saver to circulate throughout the pump and coat the internal components.
  4. Disconnect the spark plug wires (if applicable).
  5. Drain the pressure washer hose, trigger gun, and wand of any excess water. Squeeze the trigger gun to ensure all water has drained from the trigger gun.
  6. Clean and lubricate all of the exposed external moving parts with WD-40, Quick Dry Silicone, or a similar product.
  7. Store the pressure washer in a clean, dry, and safe location.

Once you have completed these steps, your pressure washer will be winterized and ready for storage.


Additional Tips For Winterizing Your Pressure Washer:

  • If you live in a very cold climate, you may want to consider storing your pressure washer indoors.
  • If you cannot store your pressure washer indoors, be sure to cover it with a tarp or other protective covering.
  • Check your pressure washer regularly throughout the winter to make sure that it is staying dry and protected.
  • Do not store your pressure washer near any heat source, such as a furnace or fireplace.

By following these tips, you can ensure that your pressure washer will be in good condition when you are ready to use it again in the spring.

Winterizing your pressure washer is a smart investment that can save you time, money, and hassle in the long run.