Are Air Purifiers Effective?

Air purifiers are basically appliances that are manufactured to clean the air in your house or car or office. They are made to help get rid of all kinds of germs or impurities like smoke, pet dander, dust, and odors.

The fact which most people miss out is that indoor air can be five times more polluted than outdoor air too. Some of the premium variants of air purifiers can detect the bad air in your house. These variants are particularly helpful if you live in a highly polluted area or area affected by a natural disaster.

The experts have formulated several researches which suggest that exhaust or smoke in the air outdoors are not as harmful as the polluted air in your home. If the air in your house is polluted, you can have primary asthma symptoms such as sinusitis, symptoms like allergies, cough, or stuffy nose.

If the smoke is very dense, you can have headaches due to the high carbon dioxide content. You can also suffer from diseases like COPD or asthma. It can get even worse for the air conditions.

Air purifiers can reduce the threats caused by indoor air pollution. But, not all air purifiers can deliver as their marketing hype.

Now, we will see in detail how these air purifiers work and how effective they are.

How do air purifiers work

The indoor air can include several impurities like toxins, allergens, and pollutants. In other words, their function is exactly opposite to that of humidifiers or oil diffusers. They add particles to the air but the air purifiers work by removing the pollutants.

These appliances are similar to filters but they are not the same. The filters can only remove the particles while the purifiers sanitize the air too.

Different kinds of air purifiers remove different kinds of particles. The pollutants sanitized depend on the variant of the air purifier you choose. Some kinds of air purifiers filter the air by trapping the impurities as they pass through them. While the other air purifiers do not filter the air but neutralize the particles before removing them.

There is one more variant known as the negative ion emitting purifier. They attract positive ion particles in the air. This neutralizes the impurities in the air. But the disadvantage of this air purifier is the chance of ozone emissions.

Are air purifiers effective?

The simple answer to this question is yes. Likely, the air purifier cannot neutralize or remove all the impurities from your home. This is because the impurities can sit on the soft particles like the bedding, carpeting, or furniture. They can also stick to the hard surfaces as the walls.

An air purifier can work more efficiently with other strategies or filters to remove the impurities in the air.


Allergens are particles that can cause alternative immune responses in the form of harmful diseases. The diseases can be major like asthma or allergies. The most familiar airborne allergens are dust mites, pet dander, and pollen. The air purifiers with the feature of a highly effective HEPA filter are known to be the best devices to get rid of airborne allergens.


Similar to allergens, the mold particles can be harmful for the people with serious lung conditions or asthma.  Air purifiers might work at some level but the filtration is much more conditioned to filter the mold from the air. Again, the air purifier loaded with the HEPA filter would work better in reducing the level of humidity at your house.


Air purifiers with filters can get rid of smoke from the indoor air. They can reduce smoke from the fire or tobacco smoke. But, the air purifiers cannot get rid of the smell of the smoke. There might also be stains of the smoke on the walls. Smoke cessation is better to filter out the smoke from the air.

Indoor toxins

The indoor toxins from the products used for cleaning, personal care products, along with the molds and allergens can infect the air. If these particles are in the air for a long time, they can cause harmful diseases. The perfect way to free your house from toxins is by reducing the use of products that cause them.

What they won’t work for?

The air purifiers can work effectively to sanitize the air for any indoor space. However, they perform better when they are used along with filters.

If you are going for the large size purifier, it can be effective for the whole house. But, if you are going for the smaller purifiers, you might need an individual purifier for a room.

Besides all the benefits the air purify can provide to sanitize the air, you need to make efforts to keep it clean yourself. All the functions of the air purifier can be futile if you do not clean the home yourself.

Some ways are listed to help clean the air of your houses.

  • Clean the furniture, carpets, and rugs regularly. Or, at least clean them once in a week with the HEPA filter vacuum.
  • In case of allergies, you should replace carpets with hardwood flooring or vinyl.
  • Once a week, wash the bedding with warm water.
  • Keep your pets clean. Bathe them regularly. If you are allergic to animal dander, avoid sleeping with the pets.
  • Check that the humidity level of your house is low. This will prevent molds and dust mites.
  • Avoid smoking inside the house.
  • If possible, switch to non-toxic cleaning products.

Final word 

Studies have proven that purifying the air can effectively reduce the harmful impurities in your homes. They can reduce the molds, allergen, and smoke.

But, air purifiers perform the best when they are paired with filters. It is also very important to keep your house clean. They might not be able to clean the quality of air in your homes but would help.

If you already have health issues like asthma or allergies, you must consult a doctor before installing an air purifier. The purified air can improve your health but you must consult your doctor about stopping any medication. We hope that this article has helped you understand better about air purifiers. Do share your views below.