Do Air Purifiers Remove Dust?

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Updated January 10, 2023

If you are about to purchase a new air purifier, there is a question that may be resting heavily on your mind. Do air purifiers remove dust?

This doesn’t just include regular dust from human shedding (dead skin cells). It also includes mold, airborne particles, and even dust mites, which can be very irritating to lung health. 

If you want to know more about removing particulate matter for asthma and dust allergies, read on for some answers.


  • Air purifiers will remove dust from the atmosphere before it has settled but do not remove dust from surfaces.
  • To prevent surface dust build-up, perform regular cleaning procedures throughout the home.
  • You will also want to clean or replace any air filters located throughout the home, such as those found with your air purifier, HVAC system, heater, and other appliances.

What are Air Purifiers and How Do They Work?

Before you understand if an air purifier can be effective against dust, it can be helpful to know what these machines are and how they work. Air purifiers are devices that are built to, well, purify the air. They accomplish this task by sucking in air from the surrounding environment, pushing the air through filters and related filtration technology, then pumping the purified air back into the room. You might want to also know how to clean an air purifier filter, especially if it appears not to be removing dust anymore.

Do Air Purifiers Remove Dust?

Air purifiers, like the AirDog X3, will not remove dust from a surface, as that is not what they are designed to do. These purifiers will remove dust from the atmosphere of your living space and remove particular matter that could eventually turn into dust. In short, you will have less dust in your home if you regularly use a good air purifier.

Knowing this, you’ll still need to dust regularly to eliminate dust mite allergies. All contaminants affecting the indoor air quality are what air purifiers work to remove, thus easing asthma symptoms and allergic reactions and preventing dust levels from building. 


Air purifiers will not remove dust from a surface, as that is not what they are designed to do.

Tips to Reduce Dust in the Home

In addition to regularly using and cleaning your air purifier, there are a number of other simple steps you can take to prevent and eliminate dust from the home. No one wants to breathe in indoor dust from poor air quality. You can read our article on the differences between an air purifier with a washable filter vs replaceable filter.

Thorough Cleaning

One of the ways to both eliminate and prevent the build-up of dust throughout the home or office is to perform regular cleaning and dusting tasks. Use a microfiber cloth or a paper towel and run it over any dusty surfaces every week or so. You should also take care to clean surfaces that don’t seem that dusty to prevent the eventual build-up of dust. After a few weeks of regular cleaning, you will notice that your living space is less dusty.

And by cleaning regularly, you’ll also prevent mold spores from forming, which reduces the number of pollutants in your home. Plus, check the Clean Air Delivery Rate (CADR) on your chosen energy-star air purifier. The bigger the CADR rating, the more indoor air pollutants it’ll catch. 

Replace or Clean Household Air Filters

In addition to cleaning and maintaining the filters included with your air purifier, you should clean or replace air filters included in other household appliances, such as HVAC systems, other air conditioning systems, heaters, and more. Follow the manufacturer’s instructions for cleaning or replacing these filters.

Wipe Down Animals

Insider Tip

One of the ways to both eliminate and prevent the build-up of dust throughout the home or office is to perform regular cleaning and dusting tasks.

Try to wipe down your pets when they return from an outdoor excursion. Whatever particles they dragged into the house can be released into the air and eventually turn into dust. Just use a clean towel or cloth, and take no longer than 30 seconds.


What is the best type of air purifier for dust?

Each type of air purifier can be effective for dust, but for maximum benefit, choose a model with a genuine HEPA filter. These filters can easily trap dust particles.

Do air purifiers actually work for dust?

Air purifiers do work for dust, so long as the dust is floating in the atmosphere and has yet to settle somewhere in your home. Once this dust has settled, the purifier can do nothing about it.

What is dust made out of?

Dust is comprised of a number of micro-particles, including skin cells, hair, clothing fibers, bacteria, dead bugs, soil particles, pollen, microscopic specks of plastic, and more.

STAT: A true HEPA filter is rated to capture particles at 0.3 microns in size with 99.97% efficiency, although it can capture both much larger and smaller particles as well. (source)

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