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Do air purifiers eliminate dust?

Do air purifiers remove dust or not? The short answer is yes, most air purifiers on the market are designed to remove large dust particles from the air. Many feature mechanical filtration, which is a method of capturing pollutants on filters.

molekule.com - Do Air Purifiers Work for Dust in Your Home? - Molekule Blog

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Reviewed by Dr. Yogi Goswami PhD, Co-founder and Chief Scientist

Oh, the dust in your home. It may be easy to clean up the dust bunnies under the couch but the dust that suspends in the air is another story. If you are able to clean dust from surfaces and carpets, that is a great plus. But it is inevitable that you will always have some dust particles floating in the air inside your home. If you or a family member is sensitive to dust and you are unsure of the type of machine that may solve this problem, the right air purifier for dust removal can help.

Why you should care about dust in the air

Dust, you will come to see, is more than just bits of soil from the outside, but is composed of a hodgepodge of unexpected materials. You would be amazed to find where dust comes from. Dust can irritate your eyes, nose, or throat and be a problem especially if you have allergies, asthma or other respiratory illnesses. If your asthma or allergies become worse because of dust, you probably have a dust allergy. What is worrisome for everyone is that tiny dust particles often float in the air, and if the particles are small enough, they can enter the lungs and cause health problems.

Dust is more complex than you think

If you thought that dust was only dirt or dead skin cells, think again. The dust you will find inside your house is a complex mixture (Layton & Beamer, 2009) of mainly:

Soil that is tracked into the home

Particulate matter from outside air

Organic material

Organic material comes from plants and animals (officially, scientists designate “organic” as carbon-based compounds).

This organic material includes:

Skin particles

Food debris

Pollen

Mold

Pet dander

Insect body parts

Dust mite allergens

Study author Pamela Beamer told NPR that the indoor components of dust can include things that do not come to mind at first, such as fibers from your carpet or bedding. Andrea Ferro, another dust expert, also spoke to NPR and said that some dust particles are small enough to easily float in the air, while others are much larger and will settle onto the floor. Some particles are made up of only one inorganic or organic compound, while others are more complex and can contain an organic coating with an inorganic center, and vice versa.

Pet dander and dust

People who are allergic to dogs or other animals are not technically allergic to pet hair, but to the proteins in saliva and skin flakes (dander) from pets, so keep this in mind when you’re searching for an air purifier for dust and pet hair. Dust can contain pet dander and may trigger allergic reactions for some people. Often, this is one of the main concerns for households with pets. And this concern exists not only when pets are present–tiny particles of pet dander remain in carpets and floors even when pets are not in the home.

Dust and dust mites

Dust may also include one of the most common allergen triggers–dust mite droppings. When you inhale dust that contains these microscopic particles produced by dust mites, it may cause allergic reactions. To make matters worse, dust mites feed on the skin particles present in dust.

Do air purifiers remove dust or not?

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The short answer is yes, most air purifiers on the market are designed to remove large dust particles from the air. Many feature mechanical filtration, which is a method of capturing pollutants on filters. Either the particles are meant to stick to the filter or be trapped within the filter fibers. You have probably heard of a mechanical filter called a HEPA filter, which is designed to trap particles in the air. Mechanical filters are either pleated like HEPA or flat. Though they are too basic to be used in an air purifier, an example of a flat filter is a simple furnace filter or a filter in your HVAC system, which can trap a small amount of dust in the air (this is your basic throwaway or washable filter). A flat filter could also be electrostatically charged for greater “stickiness” to particles.

What an air purifier for dust needs to do

An air purifier that features a mechanical filter like HEPA is “good” if it can capture tiny particles within the fibers of the filter. Dust particles usually range from 2.5 and 10 micrometers in size, though some fine particles could be even smaller. If 10 micrometers sounds big to you, this might change your mind–10 micrometers is less than the width of a human hair! Most important to remember is that dust can potentially be small enough to enter the lungs and may cause health problems. You may not have heard of the second type of air purifier that is designed to trap particles: electronic air cleaners. These can be electrostatic air purifiers or ionizing air purifiers. These air cleaners transfer an electric charge to particles and either capture them on metal plates or have them settle on nearby surfaces. The real problem with electronic air cleaners is that they can produce ozone, a harmful lung irritant. What is not going to work to trap dust is an ozone generator, which is not designed to remove particles from the air (and releases harmful ozone into the air).

What you can do about dust in the meantime

With all the talk about air purifiers and dust, do not forget about source control. This is really important because large dust particles will settle on flooring and cannot be addressed by an air purifier. These particles are also too large to suspend in the air and will simply continue the cycle of being disturbed into the air and then settling back on the floor. Source control is exactly what it sounds like, which is getting rid of the source of pollution. In this case, it could be through cleaning and dusting, though you would need to be careful about spreading more dust into the air. It is also a good idea to replace your HVAC filters as often as needed. You should also be taking preventive measures to keep from tracking dust from the outside, like changing your clothes upon entering the house or wiping pets down before they enter as well. This can reduce the amount of outdoor particles that come inside, such as pollen and mold. For more information about ways to control dust, please see the guide about sources of dust inside your house and practical solutions.

When does an air purifier for dust pass the test?

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Can a mechanical air purifier pass the test for dust? It may, depending on its efficiency, capture a certain amount of dust particles in the air that flow through the device. Depending on the machine, the air purifier may not even need to contain a “HEPA filter” (the 99.97% efficiency as mentioned above) to capture dust. Even those that are not as “efficient” may trap dust particles. Yet, it is important to note that these types of mechanical filters only trap particles and do not address gases. Also, because they trap pollutants and do not destroy them, it is possible for mold and bacteria that are trapped on these filters to multiply on the filter and be released back into the air.

The best air purifiers for dust removal

Now that you know what you are dealing with when it comes to dust, you can evaluate how effective an air purifier technology will be when it comes to dust particles. Then it will be easy to determine which air purifier for dust can best meet your needs. An air purifier that features a HEPA or other mechanical filter is an acceptable option for dust particles. However, you need to remember to change the filters once they become saturated. When it comes to electrostatic air filters or ionizers, it is best to avoid them. They can potentially produce an air pollutant themselves in the process–ozone–which can be harmful to you and your family’s health. They may not be as efficient either as a mechanical filter would be. There is a new type of air purifier technology that goes beyond what a HEPA filter alone can do for dust particles. The Molekule air purifier features Photo Electrochemical Oxidation (PECO) technology, which can destroy pollutants like allergens, mold and volatile organic chemicals (VOCs) that pass through the device.

Our solution

The Molekule device contains a dual-phase filtration system. The first phase removes particulates from the air, while the second phase can destroy organic material. Organic material may compose about 40% of indoor dust (Layton & Beamer, 2009). Thus, dust containing particles like mold, bacteria, pollen, and dust mite allergens that escape the first phase can get destroyed in the second phase.

The real dirt on dust and air purifiers

An acceptable option is to use a mechanical filter like HEPA, which is designed to remove particles from the air, provided that you replace the filters on time. Another more powerful option would be the Molekule air purifier, which contains PECO technology. Molekule surpasses other technologies because it can destroy pollutants like allergens and VOCs.

Do you have any questions or comments? Please leave them below.

molekule.com - Do Air Purifiers Work for Dust in Your Home? - Molekule Blog

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