bleach in pressure washer
  • Post category:Surface Cleaner
  • Post last modified:August 24, 2022
  • Reading time:6 mins read


Bleach is a great tool for cleaning and disinfecting. Unfortunately, it can cause damage to your pressure washer if you don’t use it properly. Here are some of the things you need to know before using bleach in your pressure washer:

Is it safe to use bleach in a pressure washer?

What is bleach?

Bleach is a caustic chemical that can be used to kill bacteria, fungi and viruses. It’s made from the reaction between oxygen and sodium hypochlorite. The active ingredient in bleach is chlorine (Cl), which has the ability to destroy organic matter by oxidation.

This makes it an excellent disinfectant but also means that it’s hazardous if you come into contact with it or accidentally ingest any residue. In fact, most people know not to mix bleach with other cleaning products such as ammonia because of this dangerous property!

So no need for me to tell you how toxic this stuff really is…

Can you use household bleach in a pressure washer?

Can you use household bleach in a pressure washer?

No, no, no!

If you’re looking for a green alternative to commercial cleaning products, look elsewhere (or at least get in touch with us). Bleach is not recommended for use in pressure washers. The very nature of its chemical composition means that it will cause damage to your pressure washer and can potentially harm the surfaces being cleaned. If someone has told you that they used bleach and everything turned out fine, they were probably lying.

Why would anyone want to risk damaging their equipment like this? Well—it might have been an accident or mistake on their part; more likely than not though: they don’t know any better because they’re either uninformed or misinformed about what using bleach does to their equipment and the environment around them. It’s another great example of how we’ve all become so disconnected from nature (and the chemicals we pump into our bodies) that guidelines like these aren’t even thought about anymore before performing actions such as pouring bleach down drains or spraying it onto plants without knowing what effect this will have on both human beings AND animals alike!

Should you mix bleach and water in a pressure washer?

You can’t mix bleach and water in a pressure washer.

Bleach is an extremely corrosive chemical, which means it can damage metal parts of your pressure washer. If you do decide to mix bleach and water, be prepared for the following:

  • Toxic fumes

  • Hazardous chemical reactions that can result in explosions or fires (or both)

  • Skin irritation from the strong acids in bleach, which are much more potent than those found in regular household cleaners

What is the best way to use bleach in a pressure washer?

Now that you know what you’re doing with your pressure washer, let’s talk about how to use bleach.

If you’re cleaning a large surface area, such as a deck or sidewalk, it is best to use the surface cleaner attachment and maximum pressure. You can also use the surface cleaner without maximum pressure if you prefer.

But if you’re cleaning smaller areas, like windows or furniture, then it is better to use low pressure and an upright nozzle (the one with a little hole in it). The goal here is not so much to blast away dirt but rather to gently scrub off any grimy residue on glass or other surfaces.

Can I use bleach for concrete cleaning with a pressure washer?

You can use bleach for concrete cleaning with a pressure washer, but you need to rinse well. If you don’t rinse well, the bleach will damage the surface of your concrete.

Bleach is a multipurpose cleaner that can be used on a variety of surfaces and materials. However, if you use it on something like cement or concrete, you’ll want to make sure that it gets rinsed off thoroughly before any staining takes place—otherwise things might start looking pretty ugly!

How do I choose the right nozzle for the job?

Choosing the right nozzle for your pressure washing job is a must. Here are some tips:

  • A fan tip is perfect for cleaning large areas quickly, like driveways and sidewalks. It’s also good at cleaning patios and decks.

  • Use a surface cleaner attachment if you’re working on composite decking or vinyl siding, because it sprays water in an oscillating pattern to loosen dirt from the surface you’re cleaning. This type of attachment works well with soap too.

  • For tough stains like grease and oil, use a rotary surface cleaner attachment instead—it’s got several rows of rotating brushes that scrub away stubborn stains without scratching or damaging your surfaces. Your car can also benefit from this attachment when you’re washing it at home! (Just don’t forget to grab some car shampoo.)

Bleach and pressure washing are great complements to each other, but only if you take proper precautions.

Pressure washers are, by design, a great way to remove mold and mildew from surfaces. Bleach is also a great way to remove mold and mildew from surfaces, but both the pressure washer and bleach can be dangerous if used improperly.

When it comes to using bleach with your pressure washer, you want to make sure you wear protective gear like goggles and gloves while using it. In addition, be sure that the area where you’re working has proper ventilation so that harmful fumes don’t collect in an enclosed area.


If you’re looking to clean your concrete with a pressure washer, the best thing you can do is get an expert in the field. You can ask family members or friends for recommendations or call up someone who has cleaned concrete before. They will be able to tell you what types of chemicals work best on different surfaces and where they should be applied so as not to damage them (like around small plants).