What do Air Purifier do? How Do They Work?


What do Air Purifiers do?

Generally, our indoor air comprises harmful viruses and bacteria that are invisible to the naked eye. While inhaling that harmful pollutants in the air will affect people by causing fever, chronic disease, heart disease, eye irritation, etc… When compared to outdoor air, indoor air has filled with more pollution because of the same air circulation.

What do Air Purifier do? How Do They Work?
source: amazon

To conquer the above problems, the Air Purifier device has been introduced in the market to get clean air in your living area. The Air Purifier removes those threatening air particles at your home or office. The dangerous air particles are PM2.5, mould, dust particles, pollen, pets Dander, falling pet hair, paint pigments, and other viruses and bacteria. And the carbon filters in the air purifier remove the smoke smell, and gas.

Hence, Air Purifier is one of the important gadgets that every living area should have the one to avoid chronic diseases caused by air pollution.

See also: 7 Best Air Purifier For Allergies in India

How does Air Purifier Works?

Most of the air purifier consists of H13 HEPA Filter, this filter will able to capture 99.97% of unwanted dust particles and it also catches the superfine particle which is smaller than 0.01 microns. Normally, an air purifier works based on two parts fan and a filter. Here Fan will pass the polluted air to the filter and once the air gets filtered it will release the purified air. This is the basic working principle of an Air Purifier.

Types of Air Purifiers:

Different types of Air Purifiers are introduced in the market. The most common types are HEPA, Activated carbon, Ionizer, UV Light, and ozone generators.

Let’s see how effective they are…

HEPA Air Purifier

HEPA which is also known as High Efficiency Particulate Air, is a common air filter that most brands prefer. This HEPA air filter will filter the ultra minute pollutant (around 0.01 microns) such as pollens, bacteria, and dust particles in the air. The diffusion component in the HEPA filter traps the micropollutants in the air and it releases pure air after the filtration occurs.

Activated Carbon Air Purifier

The activated carbon air filter is also the same as that of the HEPA filter. The main difference between them is, activated carbon will purify stubborn contaminants like gas, odour, and smoke. Whereas HEPA purifier does not remove odour and some stubborn gas substances.


Ionizer is a type of air purifier that does not contain any Filter inside the gadget. Ionizer only releases the negatively charged ion and it combines with the air particle. Hence the air particle becomes heavier and they opt to fall on the surface. You have to clean the surface accordingly.

UV Light

This process is the same as that of a HEPA Filter, hence the purifier sucks the air and the UV light passes through it. Through the process of Ultraviolet germicidal irradiation (UVGI), UV Light kills the harmful virus and bacteria in the air molecules. There are many complications found while using UV light air purifiers. Hence, if you are decided to buy them, you have to use them in recommended wavelength.

Hence the above types are recommended for indoor areas like homes and offices. Before buying the product you must ensure the types of filters and how effective they are.

Things to consider before buying Air Purifier

  1. Make sure to get the perfect air filter associated with the air purifier which is suitable for your living area. Some filters are made for industrial purposes.
  2. Decide the size of the air purifier according to your room size. Do not get one high-capacity air purifier that could be used for two rooms. Air Purifier works within the room.
  3. Make sure the air purifier is effective to remove viruses and bacteria with a 4 and more ACH rating.
  4. Make sure the noise level of the air purifier is less than 50 dB.
  5. Ensure your air purifier gets connected with smartphone devices and voice control devices like Alexa and Google.
  6. Check out the energy star rating to lower energy consumption.
  7. Have to check out the validity for maintenance. Regular maintenance is better for air purifiers but some products need maintenance once in 3 or 6 months
  8. Ensure the product has a minimum 1-year warranty.

Keep the above things in mind while buying an air purifier.

See also: Things to Consider Before Buying Air Purifier for Your Home

Bottom Line:

Air purifiers become one of the must-buy products in each and every indoor area. To achieve a healthy lifestyle keep an Air Purifier in your living room and stay away from invisible germs and bacteria.


  1. How long the air purifier works?

Some of the air purifiers will automatically work based on the detection of dust particles. If you do not have any auto features, you can use them 12 hours per day.

  1. Is Air Purifier good for health or not?

The answer is Yes. If you can choose the best one based on its features, it is good for your health.

  1. Does Air Purifier cause any side effects?

Generally, Not. But some purifier that emits ozone may affect your health. Make sure to check the specs of the air purifier before buying it.


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