Why is My Room still Dusty with Air Purifier?

If you are concerned about why is my room still dusty with the air purifier when you are doing everything right. The core reason for that could be your locality, probably where you live is causing dust or sometimes it is your home and daily routine too. it may sound absurd but it is true. How to cope with it, here is a guide. 

What Causes Dust?

It is a common perception of the grey-white ashy powdered form. Yes, it is dust, but in reality, any small particle floating in the air is dust and it is not only restricted to it, anything from different sources can turn into dust. 

Why You Shouldn’t Clean and Reuse a Disposable HEPA Filter

Pollens, mold, spores, organic debris, or other outdoor particles like lead, and arsenic, are also a part of pollution that triggers allergies in people suffering from respiratory issues, asthma especially. If you smoke, consider it a part of pollution too. 

For indoors, the possible dust source could be you, yourself, and your hair. The pigments, dead skin cells, and dust mitts on your hair, and your pet’s hair are also pollution that is keeping your home dusty. Some particles are too tiny to be seen through the eyes and are large in reality. 

Why is My Room still Dusty with Air Purifier?

There is one thing you need to accept no matter what, your home will never be dust-free even after doing everything. However, adopting some regular habits to minimize the dust. As said, the best way to cope with it is to add a powerful air purifier. 

Some common reasons for producing pollution include 

  1. Room does not have proper ventilation

One possible reason is that your room does not have enough ventilation and you have too electric appliances like ceiling fans, a refrigerator, an air conditioner, etc. You might not know but these electric appliances do attract dust particles due to their charge. 

Hence, they need to be cleaned on the regular basis. Make sure there is no dust consumption. 

  1. You are not dusting your house properly

Cleaning your air filters and air conditioners is not enough, you have to keep cleaning and dusting your other objects too. For that, it is recommended to dust with a clean microfiber cloth and vacuum regularly if you have carpet, rugs, or sofas in your room especially. 

  1. Your room is probably humid

Dust particles are attracted more in damp spaces, if you live in an area where the level of humidity is high then that’s the reason why with even an air purifier your room is dusty. Another thing is that an air purifier is not the appropriate device for the such locality. Instead, you need to install an air purifier dehumidifier. 

Editor’s choice for Air purifier and dehumidifier: Tenergy Sorbi 1000ml 

Editor’s choice for Air purifier and dehumidifier: Tenergy Sorbi 1000ml



  • Dimensions: 8 x 8 x 12 inches
  • Weight: 6 lbs. 
  • Coverage area: 200 sq. ft. 
  • Airflow capacity: 22 cubic feet per minute
  • Tank Capacity: 1 liter


  • Has HEPA filters installed for purification 
  • CADR rating with 22 CFM 
  • Affordable 


  • The high dehumidifier rate is not enough for the 200 sq. ft.

You can also have more choices for humidifiers, continue reading: Best air purifier and dehumidifer 

  1. Bringing the outside pollution into your room 

If you are wearing the same shoes inside and outside your house then this is another potential reason why your room is dusty. This is because that way, you are bringing the outside dust with your shoes. For that, the best way is to keep your home shoes and outdoor shoes separate and try to leave them behind. 

  1. You have unattended books 

Another common source of dust is, books, they are one of the great bed for it. If you have them for a long time and have not read them, it is better either to dust them properly or sort them according to your need.


If, even after having an air purifier installed still have dust floating or settled on your furniture, there is a chance that either your air purifier needs cleaning or filter replacement. Else, your device is not working properly. 

In case the filters are dirty, here is 

How to clean an air purifier?

No doubt an air purifier is a source of cleaning the dust from your house but your unit needs cleaning too. HEPA filters are most commonly used either alone or paired with other purifying filters. Usually, they are available in two variants; washable and non-washable. 

For non-washable HEPA filters,

  • For non-washable filters, HEPA filters are usually said and or suggested to be replaced every 4 to 6 months. In some cases, even after 8 months. But again, it depends on your locality, if you live in a polluted area, then maybe you need to replace it frequently. And for that, it is better to go for the washable filter for a cost-effective source.

If you are not sure when to change them, modern air purifiers come with a red light indicator that will let you know when it is time to change and or replace the air purifier filters.  

For washable filters

Washable HEPA filters are a cost-effective option to have. For washable air purifiers, you need to clean them regularly. 

To wash it, use mild soap and a soft bristle brush to clean the filters. Don’t forget to brush or shake off the excess amount of dust and debris. 

Remember, whenever you wash it, make sure to air dry it properly before you install it back in the unit, and do not use boiling hot water or tough chemicals for cleansing. This will deteriorate the microfibers of the filter affecting its efficiency. 

Editor’s choice for the Best Air Purifier for Dust, IQAir HealthPRo HEPA Air Purifier

Editor’s choice for the Best Air Purifier for Dust, IQAir HealthPRo HEPA Air Purifier



  • Dimensions: 11.5 x 27 x 27 inches
  • Coverage Area: 1125 sq. ft. 
  • Weight: 35 lbs. 
  • Noise level: 22 to 57 dB
  • Filters: 4-stage filtration 
  • Airflow: 300 CFM 

This air purifier is recommended as the best air purifier for allergies as it alone can cover a large area with an impressive CADR which is 300 along with 200 CFM.  

IQAir purifier captures the small, medium, and large sizes of pollutants that come with HEPA filters to offer great and optimal cleaning. This one is 100x more efficient than its competitor with the same range. 

The filtration is a 4-stage that involves hyper HEPA filters that remove 99.97 percent of microns with ease which is more effective than normal HEPA. 

This air purifier has a great area coverage which is 1125 sq. ft. which is quite large with a minimal noise level, of not more than 60 dB. 


  • 4-stage filtration, H10 and H12 HEPA installed for optimal performance 
  • Capable of capturing large pollutants 
  • Great performance with 300 CADR, 200 CFM max. airflow with up to 1125 sq. ft. area. 
  • The noise level is below 60 dB 


  • Airflow is not that impressive 

Conclusion: Why is my room still dusty with air purifier?

It might not be that difficult to find out the reason for the dust source, it is just right in front of you, and probably you are not noticing it. Thus, in this article, I have shared the common possibilities for why the room is still dusty even when you have an air purifier. Hope you find it informative.

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