Air Purifier For Home – Buying Guide

What is Air purifier?

Air purifier for home is a device with a specialized filtering process that helps eradicate microscopic particles such as dust, smoke, pet hairs, dander, harmful allergens, and many more minute impurities in the air, which has various harmful effects 

A high-quality air purifier for home can trap 99.6% harmful particles, which might have caused any respiratory illness if it would have persisted in the air. 

This product is known to reduce allergy symptoms and asthma and make the surrounding safe and clean to breathe.

How Does Air Purifier work? 

Air purifier works by filtering out clouds of dust and pollen from the air. A typical air purifier has three filters and one UV lamp. 

  • First Air filter is the primary filter, which removes the large impure particles; 
  • The second Air filter is the antibacterial HEPA filter, which eliminates bacteria and PM 2.5- particulates, 
  • The third filter is the specially treated carbon filter, which removes the odor. 

There is also a UV lamp that acts as an ionizer, which ultimately gives clean and purified air.

What Types Of Pollutants Can Air Purifier For Home Remove?

An air purifier for home can remove the following types of pollutants

  • Pollens
  • Plant spores and fungi
  • Dust and dust mites
  • Pet dander and hair
  • Mold spore
  • Toxins from aerosol sprays and pesticides
  • Volatile organic compounds are found on paint, varnishes, cleaning supplies, new carpet, and building materials.
  • Bacteria and virus
  • Tobacco and wood smoke
  • Household odors from cooking, pets, and chemical cleaners.

Types of Air Purifier Filters

While you are looking to buy best air purifier in India or air purifier in the US, let’s look at the different types of Air Purifier filters

Air Purifier for Home

HEPA filter Air Purifier

HEPA filter eradicates common allergens such as pollen, animal skin and dander, mold spores, and dust. 

Lager the size of the HEPA filter, the more particulates it can remove. Hepa filter can remove 99.9% of particles, which may be as small as 0.3 microns.

Activated carbon filter

 Carbon filter works by reacting with oxygen, which leads to the opening up of millions of pores, which helps in trapping a large amount of gas or odor.

It neutralizes smokes, chemicals, and fumes because of the presence of activated carbon or charcoal filters.

Antibacterial and Germicidal Filter

Eliminates harmful bacteria and germs and is thus used in schools, hospital labs, and daycares. It also uses UV filters along with HEPA filters to make the air safe to breathe.

Charged Media Filters

It has a particle filter and an electrostatic charge, which can capture as small as 0.1-micron particles. It is useful in purifying the air but has a disadvantage of regularly replacing to get optimal performance.

Photocatalytic Oxidation (PCO)

Uses titanium dioxide-coated metal plate along with UV light to carry out a filtration process. It works on the principle of breaking down large particles into harmless carbon dioxide and water molecules.

Electrostatic Precipitators

It has similarities with charged media filters; the only difference is that the particles precipitate and accumulate on collector plates. 

These plates are washable and do not need to be replaced continuously.

Ion Generators and Ozone Generators

It works on the property of cleaning the air by forcing the particles to cling to nearby surfaces. It contains some negative ions which adhere to the dust particles, and it sticks to the wall or carpets.


Pre-filters helps remove larger particles such as pet hair before the beginning of the next stage of filtration. Some also have electrostatic properties that help to remove odor and smoke.

Heat Filtration

Heal filtration helps to remove organic particles like bacteria, viruses, dust mites, and mold with the help of an inner ceramic plate that heats up to nearly 400 degrees celsius. 

It keeps the air circulating as it works slowly. The only disadvantage is that it is ineffective against chemical vapors, smoke, and other non-organic particles.

What Air Purifier for Home does well?

  • Air Purifier entrap pollutants and help remove certain diseases causing allergies 
  • Airborne asbestos causes mesothelioma development and air purifier are also known to remove them.
  • Air Purifier for home keeps the air clean by removing outside fumes and pollutants and keep our home carbon dioxide-free.
  • Air Purifier keep the air in the hospitals and health clinics safe by eradicating contamination.
  • Air Purifier for home saves your family members from any chronic respiratory diseases.
  • Air Purifier imparts clean air which also has a positive effect on the health as well as the mood of the people. At times it also reduces stress

What to Consider While buying Air Purifier for home

If you are buying the best air purifier for home in India , then take care of the below parameters

Air filter Price for Replacement

Air Filter should be changed every 3 to 6 months, and hence the cost should be low for the replacement. Air filter price should be considered a significant criterion while buying  air purifier for home

ACH –  Air changes per hour

ACH refers to the number of times an air purifier cleans the air while being used. ACH should be a minimum of 4 while buying an air purifier.

CADR – Clean Air Delivery Rate

CADR stands for Clean Air Delivery Rate and it is a measure of air purifier filtration capacity. CADR measures the volume of air an air purifier can clean in a minute, Higher the CADR, the better it is. 

Range of CADR for Home Air Purifier – More than 200 m3/hour

Room Size

Room Size is an essential factor to keep in mind while buying an air purifier. Shop for the air purifier accordingly keeping in mind the size of your room. Larger the room, the larger the size of the air purifier should be. 

Indoor Air Quality Indicator

This is also an essential factor to keep in mind while shopping for an air purifier. The more the indoor air quality indicator shows, the better the air purifier will be.

Noise Modes

 Often there are multiple operating modes in an air purifier. Check if there is a silent mode or not else while you sleep at night, the Air purifier quill makes noise while filtering the air. 

Child Lock – Parental Control

A good to have a feature where you can disable the buttons of air purifiers so that children can not misuse the buttons by continuously pressing it. 

Scroll to Top
Scroll to Top