7 Best Air Purifier in India: 2020 Reviews & Buying Guide

Air Purifier is the best way to deal with indoor air pollution. According to Indian Journal of Community Medicine, indoor air is 5 times more polluted than out door air – because of poor ventilation and gases emitted by perfumes, stoves and other household electric appliances.

If you want to purchase the best air purifier in India, then you should consider below factors…

How to choose an air purifier?

  • Filter Type – Some of the common types of filters present in air purifiers are – HEPA (for dust), activated carbon (for odors and gases), and UV (for bacteria). Some of the appliances also come with a combination of 2 or 3 types of filters. You can choose according to your requirements.
  • CADR: It represents clean air delivery rate. It has to be at least 300 or above for effective performance.
  • ACH: (air changes per hour) An ideal air purifier has 6 ACH rating. For people with asthma or other respiratory issues, ACH rating of 6 to 8 is recommended.

Apart from these three factors, you should also consider room size, maintenance costs, ease of operation and power required. You can go through our “Buying Guide” for a clear and detail explanation of these factors.

Based on the same research, we have shortlisted Best Air Purifier in India. Have a look at them below.

Best Air Purifier for Home in India

Best Air PurifierNo'of FiltersCDARCoverage Area WeightWarrantyBuy Now
Mi 2S Air Purifier3250 m3/hr300 sqft4.8 Kg1 year Check the Price
Philips 3000 Series AC3256/20 Air Purifier2376 m3/hr818 sqft.9.82 Kg2 years Check the Price
Honeywell HAC25M1201W Air Purifier 3250 m3/hr323 sqftN.A1 year Check the Price
Coway Sleek Pro AP-0509 Air Purifier3216 m3/hr255 sqft5.9 Kg3 years Check the Price
Dyson Wifi-Enabled Air Purifier2250 m3/hr300 sqft6.65 Kg2 years Check the Price
Hindware Moonbow AP-A8400UIN Air Purifier6180 m3/hr350 sqft.4.8Kg1 year Check the Price
Tefal Intense Pure Air Purifier5215 m3/hr400 sqft4.2 Kg1 year Check the Price

7 Best Air Purifier Brand Reviews in India 2020

1. Mi 2S Air Purifier

mi-air-purifires-1Though Mi brand has hit the Indian market few years ago, it has impressed the consumers with its quality, durable, and cost effective products. And Mi Air Purifier 2 S is no different – as it is equipped with powerful filtration system, auto-adjust brightness and several other beneficial factors.

The main reasons for why we choose this product first are – cost effective and powerful three-layer filtration system. The outer layer is designed to remove large air borne particles like hair, dust and others. The second (middle) layer removes micron-sized particles and harmful bacteria.

The innermost layer has activated carbon which is capable of effectively removing formaldehyde, odors and other harmful substances. With smart phone connectivity, you can change the modes, see the temperature and humidity of the room. It also notifies when the filter needs to be changed.

Other Notable Features                                             

  • Speed Modes: Auto, Night and Manual
  • CADR: 310 m3/hr
  • Suitable for: 400sqft room
  • Safety Features: Auto-turn off
  • Dimensions: 24 x 24 x 52 cm
  • Filter Replacement: once in 6 months
  • Power Consumption: 29 Watts
  • Control: Remote or Mobile App
  • Noise Levels: Quite

Warranty 1-year

warranty is provided by the manufacturer. Previously there are was only online service, but MI brand has opened several stores, where you can get the repairs or replacements. You can chat the MI support team on their website.


  • Scientifically designed and efficient 3-layer filter
  • Displays AQI
  • OLED display
  • Smart control and monitoring feature
  • Budget-friendly
  • Quite and energy efficient
  • Has sleep mode
  • Allergen and odor free air


  • Short power cable
  • Manual mode can be noisy
  • Higher filter replacement cost

Buy Now at Amazon

2. Philips 3000 Series AC3256/20 Air Purifier

Philips-air-purifires-1Philips is one of the most trusted brands across the world. Philips AC3256/20 AeraSense air purifier is perfect for people who have respiratory issues like asthma. With AeraSense technology this product can detect even the slightest change in the air quality and gives real-time air quality reading along with Vitashield IPS that is unique, high-performance air purification method.

Its Nano Protect S3 activated carbon filter, and True HEPA filter can eliminate ultrafine particles up to 0.2 microns, which is more than many purifiers will do. You cannot wash or vacuum its filters. You will have to replace it once it is exhausted. However, its pre-filter is washable.

Other Notable Features

  • Speed Modes: 5 settings
  • CADR: 376 m3/hr
  • Suitable for: 818 sqft room
  • Dimensions: 47.4 x 34 x 79.8 cm
  • Safety Feature: child-lock
  • Special Features: dedicated allergen mode and ultra-silent sleep mode
  • Filter Replacement: once in 9 months to 3 years
  • Power Consumption: 60 Watts
  • Control: Remote
  • Noise Levels: 49db
  • Weight: 9.82 Kg


The product comes with 2-years warranty and a filter life that lasts between 9 months to 3 years, which is pretty decent. For any issues related to air purifiers, you can call the customer service on 1800 103 1235. As per the customer reviews, they have experienced the air quality difference after using it for just few hours. Symptoms of respiratory issues like asthma have reduced to maximum extent. Apart from that, sleep quality has also improved drastically.


  • Nano Protect HEPA Filter
  • Durable filters
  • The unit has a handle for easy movability
  • Auto adjustable LED light while on sleep mode
  • Allergen mode, extra-quiet sleep mode, AeraSense technology
  • Real-time PM 2.5 rating
  • Indicator for filter replacement


  • Non-washable filters
  • Higher price
  • No remote controller

Buy Now at Amazon

3. Honeywell HAC25M1201W Air Purifier

Honeywell-air-purifires-1The quality and performance of Honeywell products are par excellence. The HAC25M1201W air purifier model is nothing less. It is a certified product by the ECARF for its superb air quality by removing microscopic allergens from the air.

The reasons we chose this air purifier to be on our list are – it is cost effective, uses 3-layer HEPA filter, has a 3D suction method that distributes and circulates the air in the entire room and comes loaded with sleep mode, auto mode and a child lock/ anti-fall system. This unit is suitable if you do not stay in an extremely polluted city.

Other Notable Features

  • Speed Modes: 5 settings
  • CADR: 250 m3/hr
  • Suitable for: 323 sqft room
  • Display: LED touch
  • Safety Feature: child lock
  • Filter Replacement: once in 9 months to 1 years
  • Power Consumption: 60 Watts
  • Color Indicator: blue for good quality, orange for medium quality, and red for poor air


Honeywell manufacturers have provided 1-year warranty on this product. For electrical product related enquires, you can contact the customer service on 1800 103 3848. They have extended customers service network in 25 cities. As per customers you have used this product for months have mentioned that asthma triggers have reduced and experienced better breathing.


  • 3000 hours filter life
  • Multi-modes and fan speed
  • Child lock feature
  • Stylish and compact
  • 3D air flow
  • Certifications like no other
  • Powerful air cleaning in 10 minutes


  • Non-washable filters
  • Does not have a timer
  • Higher fan speeds can be noisy
  • A few of the users had a problem with its ‘anti-fall/ child lock’ feature.
  • Does not display AQI

Buy Now at Amazon

4. Coway Sleek Pro AP-0509 Air Purifier

Coway-Sleek-air-purifires-1Coway is a Korean brand with a legacy in making home appliances that are efficient and durable. The Coway Sleek Pro AP-0509 air purifier comes fitted with a 3-layer HEPA filter that runs for a massive 85000 hours, which lasts for 4 to 6 years. The sturdy built & quality, sleek design, and insignificant recurring cost have propelled us to place this Korean air purifier on the 3rd position.

Its innovative design has an LED light indicator. The LED light turns pink when there is some degree of pollution in the air, and it is red when the air quality is poor; else, it shows a blue light to indicate high quality air. However, the absence of AQI reader and lack of controlling options are counted among its drawbacks.

Other Notable Features

  • Speed Modes: 1 level, 2 level, 3 level
  • CADR: 216 m3/hr
  • Suitable for: 255 sqft room
  • Dimensions: 312 x 575 x 198 mm
  • Filter Replacement: once in 4 to 6 years
  • Power Consumption: 44 Watts
  • Control: Remote
  • Noise Levels: 44db
  • Weight: 5.9 Kg


The company offers a full refund if you report any manufacturing defect within ten days of purchase. The product comes with 3 years of warranty on the motor and one-year warranty on other electrical parts. For more information, you can call on 1800 102 6960. According to customer reviews, customer service is by far the best in the market. They are friendly, proactive and transparent.


  • True HEPA filtration technology
  • Compact design and stylish looks
  • Low power consumption
  • Good customer care support
  • Automatic airflow control
  • One-touch air speed control
  • Silent operation


  • Noisy turbo mode
  • Allows only manual controlling
  • NO AQI reading available

Buy Now at Amazon

5. Dyson Wifi-Enabled Air Purifier

dyson-air-purifiresSince its inception in 1991, Dyson brand has been providing several household appliances like vacuum cleaners, air purifiers, hand dryers, heaters and several others. The quality, innovative design and performance of their products are exceptional. The cool link tower air purifier of Dyson is capable of filtering 99.95% harmful pollutants (0.1 microns) through vacuum-sealed glass and lower face velocity HEPA filter.

Its air multiplier technology provides powerful air projection. The oscillation feature helps to circulate purified air throughout the room. Dyson Pure Cool Link Tower Air purifier can sense the air pollution rate, love air quality and room temperature. This information is presented on LCD screen and its mobile App.

Other Notable Features

  • Settings: 10 air speed settings, Sleep Mode, Auto Mode
  • CADR: 250 m3/hr
  • Suitable for:300 sqft room
  • Display: LCD screen
  • Filter Replacement: once in 9 months to 1 years
  • Power Consumption: 40 Watts
  • Control Type: Remote


2-years warranty is provided by the manufacturer. Free installation is also provided by the manufacturer. For availing warranty or free installation or any other support, contact us on 18002586688.


  • Automatically removes 99.95% pollutants
  • Air multiplier technology
  • Vacuum sealed 360 degrees glass HEPA filter
  • Small foot print
  • Certified by Asthma & Allergy Foundation of America
  • Advanced sensors


  • Expensive
  • Not effective in high humidity areas

Buy Now at Amazon

6. Hindware Moonbow AP-A8400UIN Air Purifier

Hindware-air-purifiresSince few years back, Hindware has been expanded its products to home furnishings, appliances and others. Among them Moonbow AP-A8400UIN is one of the best air purifiers in their price range.

This product has 5 filters which include pre-filter, true HEPA filter, activated carbon filter, UV lamp, and refreshing energizers. This filtration process has the capability of eliminating 99.985% of pollutants as small as 0.3 microns.

Other Notable Features

  • CADR: 215 m3/hr
  • Suitable for: 400 sqft room
  • Dimensions: 312 x 575 x 198 mm
  • Filter Replacement: once in a year
  • Power Consumption: 55 Watts
  • Control: Remote
  • Noise Levels: 44db
  • Weight: 4.2 Kg


It has a warranty of 1 year, which is only against manufacturing defects.  It does not cover any damage done to the body of the machine or any external accessory.


  • Suitable for bedroom and living room
  • Value for money
  • Lightweight
  • Compact and portable
  • Easy to clean
  • Instruction manual


  • Customer service is not up to the mark

Buy Now at Amazon

7. Tefal Intense Pure Air Purifier

tefal-air-purifiresTefal is an International brand famous for its innovative and high performance products. As per the manufacturer Tefal Intense product is the only capable air purifier in permanently destroying carcinogenic formaldehyde along with filtering up to 99.97% pollutants.

This product has 4 filters that include – pre-filter, active carbon, HEPA and NanoCaptur filter. The fourth layer is capable of capturing carcinogenic formaldehyde and destroying them permanently by turning them into neutral molecules. Nanocaptur filter technology is approved by British Allergy Foundation.

Other Notable Features

  • Speed settings: 4
  • CADR: 215 m3/hr
  • Suitable for: 377 sqft room
  • Dimensions: 312 x 575 x 198 mm
  • Filter Replacement: once in a year
  • Power Consumption: 30 Watts
  • Noise Levels: 45db
  • Weight: 4.2 Kg


2-years manufacturer warranty and a detail instruction manual is provided. If you have any queries, contact on 1100201860-200-1232 or write to customercare.india@tefal.com.


  • 4-levels of filtration
  • Patented NanoCaptur technology
  • Only purifier capable of destroying carcinogenic formaldehyde
  • Approved by British Allergy Foundation
  • Also protected by 5 International patents
  • Can filter 99.95% of air pollutants


  • Having remote control would be beneficial

Buy Now at Amazon

Air Purifier Buying Guide

What is an Air Purifier?

As the name implies, it purifies the air by removing pollutants and impurities present in the surrounding area. Few common indoor pollutants are pet dander, smoke, odors, dust and chemicals for air fresheners. As per some verified studies, indoor air is five time more polluted than air present outdoors. So, it has become a compulsory device to have at home.

How Does an Air Purifier Work?

An air purifier has two main components – filter and fan. Some purifiers have single filter while others have multiple. Fan is responsible for sucking the air and expelling it out. When the device is turned on, fan will suck air inside which moves through the filter. Now at this point, all the pollutants and impurities are removed and the resulting clean air will be pushed out into the surroundings.

Usually, filters present in the air purifiers are either made up of fiber, paper or mesh. No matter what filter type it, if not cleaned regularly then it can lose its efficiency and performance. So, we have to consider both upfront and maintenance costs while buying an air purifier.

How to Choose an Air Purifier?

As it is a matter of health, you have to be very careful while choosing an air purifier. Without proper knowledge, it can be difficult to choose a single product among the varied options. That is why, we have curated all the information to consider while purchasing an air purifier.

1. Is Air Purifier Really Necessary

This is the first thing to do while purchasing an air purifier. If you have been experiencing any of the below issues, then it’s time purchase an air purifier.

  • Symptoms of seasonal or pet related allergies.
  • No idea what is triggering your asthma attacks.
  • Renovating work in or around your house surrounding.
  • Feel nauseated because of dust and paint fumes.
  • Frequently getting cold and cough.
  • If your room needs disinfection to deal with bacteria.
  • Have pets that shed dander or if they are reason for odd smells.
  • If you or any family member has smoking habit

If you fall under any of these issues, then purchasing an air purifier is inevitable.

2. Air Purifier Type

Not everyone of us have same requirements. Some people require purifier in just a room while others may need purification in entire house. That is why, this factors become the second important factor to consider. Based on their coverage, there are three types of air purifiers that cover different requirements.

a) Portable Air Purifiers

Some manufacturers refer it to as room air purifiers. They are perfect for single rooms like kitchen, bathroom, bedroom and others. They don’t have any additional cooling or heating system – which makes them easy to transport from one room to another based on your requirements. Or else, you can turn them on only when people are present in the room.

Some of these air purifiers are capable of running all day long, however it depends on the capacity as well. They are available in different sizes – small to large. Small ones are probably suitable for vehicles like cars. Based on the room size, you can choose medium to large sizes of room air purifiers.

b) Whole-House Air Purifiers

This option is perfect for people who have air purifications needs of whole house. Unlike room purifiers, they can be connected existing cooling or heating system. They are perfect for large rooms and people with allergy issues.

With these air purifiers, you can experience the improvement of air quality quickly after turning it on. As they come with long lasting filters, whole-house purifiers need less maintenance. If connected to existing HVAC system, they don’t generate any noise. And it also extends the HVAC’s life as it will remove all the impurities that can interfere with its performance. They can remove 99% of dust, bacteria and pollen present in the air.

c) Commercial Air Purifiers

These purifiers are suitable for large spaces like long halls, lounges, offices, malls, warehouse and others. Having large capacity, they can remove 99% of pollutants in large areas without any worries. Commercial air purifiers have HEPA and PCO filters which are capable of handling even more harmful bacteria and chemicals. Along with that, they can also deal with tobacco smoke, fumes, odors, dust and others.

2. Types of Air Purifier Filters

Based on their capability of removing impurities and technology used, filters are categorized into different types. Each of these filter types have benefits and drawbacks. So, some manufacturers design air purifiers with 2 or 3 filters to increase the filtration capabilities. We have provided a detail information of each filter type below. Read them carefully to know which one of suits your requirements.

a. High Efficiency Particulate Air Filter (HEPA)

This is one of the most popular one among filters. They are made up of cotton, fiber, foam and fiberglass. Working principle of HEPA filter – When fan send air to pass through the filter, out 99.97% of pollutants as small as 0.3 microns will be trapped within it and only clean air expelled out. This makes them suitable for household air purification. In this process, they don’t produce any harmful byproducts like ozone that are harmful to people and environment.

However, if the filter is filled with trapped dust, it can no longer filter the air. So, they have to cleaned once in a while to maintain its efficiency.

There are some air purifiers in the market that use HEPA like filters which are actually duplicate version of the original. They are capable of trapping only 2 to 5 micron impurities. If you don’t want to waste your money on these, then you have to check the MERV rating. If the air purifier has higher MERV rating, then you can be assured of the efficiency.

HEPA can filter are pet dander, dust, animal dander, pollen, dirt, smoke and others.
Commonly used and top certified filtersNeeds regular maintenance and replacement of filters
Efficient in trapping small particles up to 0.5 micron

Expensive than others
Doesn’t release back the trapped impuritiesCannot remove odor, gases and fumes
Suitable for people with respiratory issuesHas a fan to suck in air, which is noisy

b. Activated Carbon Filters

In most of the cases, these filters are used in combination with another filter type. Because they can only filter out gases, chemicals and fumes present in the air. They contain small pores where these impurities are trapped. Each pound of activated carbon contains up to 150 acres of surface area which is good enough to trap the impurities even in large rooms.

Choose an air purifier that comes with higher surface area which implies the purification efficiency as well. Once it traps the impurities, they will not be released back which means no contamination.

Air purifier with activated carbon filter is suitable for people dealing with multiple chemical sensitivity. And they can trap formaldehyde and perfume odors which can create unbreathable environment for babies and elders.

Activated carbon filter can remove gases, bad smells, chemical fumes and smoke.
Can remove volatile compounds like gases, odors, fumes, smells, smoke and othersSuitable only for removing gases, fumers, odor, and nothing else. May be a bit large particles in the air like PM 2.5
Cheap to replace
best suited for asthma patients
Effective for people in industrial areas
Helps to keep the room fresh

c. UV Lamp

If you are looking for an air purifier that can kill bacteria, germs and bacteria, then go for a model with UV lamp. As per some studies conducted by California Air Resource Board, even 20 Watt bulb can kill germs, microbes and pathogens within few seconds. During this process, it will not release any ozone byproduct so it is completely safe to use, even in hospitals, labs, kitchen and day care.

This is perfect for areas with humid and moist climatic conditioners. As it cannot deal with other pollutants, UV filter is used in combination with other filters to provide effective performance. If it is not used with another filter, then microbes can hide with pollutants and make their way back to the surroundings. In most of the cases, it is used with HEPA or activated carbon.

UV light filter is capable of removing microbes, bacteria, germs and virus.
Capable of lasting thousands of hoursIt cannot be bough standalone device as it cannot remove pollutants like dust, pollen and others
Rarely needs a replacementComes with in combination with air purifier filter
provides sterile environment

d. Ionic Air Purifiers or Ion Generators

This filter type generates ions either positive or negative and releases it back into the surroundings. These ions will attract and attach themselves to impurities present in the air. This process makes them heavy and drop down on the floor, wall or furniture.

This process is capable of dealing with all kinds of impurities as small as 0.01 microns including smells and microbes. However, it is the least effective type of air purifications as it just masks the impurities but doesn’t trap or get rid of them. In some cases, the impurities can get recirculated back into the surroundings. And they have to cleaned regularly to be effective

Ionic filter can deal with pollen, dust, bacteria, and other volatile compounds. 
Maintenance free, doesn’t require costly repalcementsPollutants remain in the room clinging to the surfaces. You have to use an electro-static plate to remove them
Less expensive than HEPA filtersHas to be cleaned frequently
Noise free as it doesn’t use a fanNot capable of removing odors
Produces a small amount of ozone as by-product which can be an irritant for asthma

e. Ozone Generators

This type of filter release ozone to deal with purification. However, this technology is considered is not safe. If exposed daily, it can scar the lungs. It is even more dangerous to people dealing with respiratory issues. They are generally used for emergency purpose like after floods.

Note: Avoid purchasing air purifiers with ozone generators as they can be hazardous to kids, babies and elders.

Important to Note: It is better to avoid purchasing air purifiers with ozone technology.

3. Room Size

This factors lets you choose an air purifier sufficient enough to deal with the room area you are going to place it. For this, you have to check the areas of the room and compare it to capability of the air purifier. You can see the capability on the specifications present on package. However, if you want to calculate on your own, then below are the instructions.

a. For Single Room:

Measure the length and width of the room you are going to place the air purifier. Multiply both of them and the result is the required rating you will need.

Example – 10’(L) x 20’ (W) = 200 sq.ft. (required capacity)

b. Multiple Rooms:

If you require air purification for multiple rooms like bedroom, living, kitchen and others. In order to find out the appropriate capacity, you have to combine the area of all rooms.

Example – Living room (20’ x 40’) = 200 sq.ft and bedroom (10’ x 10’) = 100 sqft. So, 200 + 100 = 300 sqft which is the total capacity you require.

Once you calculate using the same formula, you will end with up good effective air purifier. Make sure the model you choose has at least equal or greater than capacity you require.

Below is a table representing general instructions…

Room Type CADR
Living Rooms (up to 400 Sq.ft) 250
Bedrooms (up to 300 Sq.ft) 140
For whole house 400

4. CADR (Clean Air Delivery Rate)

It represents how quick an air purifier can clean the impurities present in the air. So, before purchasing the air purifier, it is important to check the CADR rating. If you want effective performance, make sure the rating is at least 300 or more. If you want to calculate the CADR rating according to the room requirements, then below are the calculations.

Divide area (square footage) by 1.55

For example, 100 sqft is the room size. If you divide it by 1.55, then it will result in 64.52 – required CADR levels.

 5. ACH (Air Changes Per Hour)

If you or any of the family member is dealing with allergies or asthma, then make sure to check out this factor. It represents how many times does air purifiers can filter the complete air in the room within an hour. If your air purifier has 6 ACH rating, then it means that it can complete air purification 6 times within an hour. For people with respiratory issues, ACH has to be at least 4 or more. Usually 6 or 8 is the most preferred choice. Below are the general guidelines for ACH rating…

  • 4 ACH Rating – is suitable for less polluted areas
  • 6 ACH Rating – is suitable for all room types and people
  • 8 ACH Rating – is suitable for people with respiratory issues

6. Placement Considerations

Placing an air purifier at an appropriate place also improves its efficiency. Wherever you place the air purifier, make sure there is 18 inches of space around so that nothing can interfere with air flow. Most of the air purifier models take air from all the sides. So, placing them against any object or wall can reduce their performance.

If you are going to place air purifier in bedroom, then make sure it 6 or 7 feet far from the headboard. This is the perfect position to keep an air purifier because it will far enough from your head and close enough to purify the air around you. Some other considerations include…

  • Air Purifiers with Carbon or HEPA Filter – They use fans to suck air in and outside. The best place to keep them is 2 to 3 feet away from wall and furniture. Never them place under table, bed, behind couch as they can hinder their performance.
  • Air Purifiers with Ionic Filtration – These air purifiers don’t depend on fans for moving the air. They actually emit the ions around 360degree angle. So, never place them near any furniture or wall as it can affect the performance. The best position to place it in the center of the bedroom.

7. Filter Replacements

Apart from upfront costs, it is also important to check how does it cost to maintain or replace the filters. If the model you choose has 2 different filter types, then you may have to replace them individually at different time zones. If they are replaced on time, it can add pressure on the motor and wears them quickly.

Life period of a filter depends on usage and air quality as well. HEPA and carbon filters have to be replaced regularly as they cannot filter air if clogged up. If you are going for these filters, then check the manufacturer instructions on time period of filter replacement. In most the cases, they last 3 months to 1 years based on the usage.

However, if you are going for ionic filter, then you don’t have to worry about maintenance costs. These filters are not degradable and can be washed to reuse, making them cost-effective.

8. Energy Consumption

Air purifier need continuous supply of electricity to work. So, you have to consider the amount you spend on power bills. In order to calculate how much power an air purifier consumes, consider the below calculation.

For this first check out the volts and amps on the specifications of the product. Now apply the formula.

Volts x amps = watts.

To get amount of power consumed per day, apply the formula below.

Watts x hours / 1000. The resultant is the power consumed by an air purifier per day.

Most of the air purifiers in India consume 50 Watts to 200 Watts. Check out the energy star rating before making the purchase. Because it determines that power consumption is less.

9. Noise Levels

Air purifiers with fan make lots of noise. The range of noise can depend on the speed of the fan as well. Usually, purifiers with HEPA or carbon filter need fans to operate efficiently.

Most of them come with 2 level speeds – high and low. Some high-end models can come with 5 speed levels as well that include low, medium, high, turbo and automatic.

If you are going to place it in bedroom, then make sure it doesn’t make much noise so that you get disturbed during sleep. We recommend to choose air purifier according to room size. If it is small, then it may have to work harder which can result in more noise. If you are going with ionic filters, then you may not have to worry as they work whisper silent.

10. Additional Features

Some air purifier models come with additional features to ease up the operation. However, remember that having these features can increase the price of air purifier as well.

  • Pre-filter

It traps large impurities present in the air. Having this in combination with filter helps to increase efficiency and lifespan. Most of the pre-filters are cheap and some of them are washable as well.

  • Digital Controls

This option helps to control or adjust the settings according to your requirements.

  • Fan Speed

Air purifiers come with 2 to 5 speed settings that range from low to high. Some of them have additional speed option called turbo which kick starts cleaning process.

  • Filter Replacement Indicators

This feature notifies you when to replace the filters. It provides notification if the filter is filled up with pollutants and no longer effective in cleaning the air. You can either replace the filter or wash it.

  • Programmable Timer

This feature is available in most of the modern air purifiers. You can set predefine time on how many hours or time air purifier should work. After that, it will automatically turn off. This helps in saving electricity.

  • Carrying Handle

Carrying air purifier is not easy. Having a handle can make it easy to transport it from one place to another.

  • Casters

It functionality is similar to handle. Set of wheels are provided to air purifier. This makes it easy to move them as you wish.

  • Antimicrobial Treatment

It is mostly present in all air purifier models. It prevents buildup and spread of bacteria and micro-organisms on filters and other parts of the air purifier

  • Air Quality Sensors

They monitor the air and adjust the air purifier functionality according to it.

  • PlasmaWave Technology

The working principle of this feature is similar to ionizers. It doesn’t emit ozone or negative ions but uses water vapor to achieve the same.

  • Photocatalytic Oxidation (PCO)

It is the most advanced filtering process as it has UV light will destroy chemicals, microbes and other volatile organic compounds.

  • Nightlight

It helps to identify the place of purifier in dark rooms.

  • Remote Control

This lets you adjust the settings or operate the purifier even from a significant distance.

  • Mobile App

It lets you operate the purifier through your smart phone. It also helps to monitor the air quality levels from your home.

11. Brand Reputation

Trust, quality and customer service of a brand also helps you take a decision. Some brands have good reputation in terms of quality and customer service while other are not. So, check out the reviews carefully before taking the decision.

12. Warranty

It is also an important thing to consider while purchasing the purifier. Some air purifiers come with 1-year warranty while other can provide up to 5-year warranty as well. And also make sure what parts are covered in the warranty period. With this, you can get repair or replacement if the product turns out defective.

13. Price of Air Purifier

For some this may not be an issue. However, for most of us this is the important thing. If you want to purchase a cheap air purifier with good efficiency, then Tefla Intense Pure Air Purifier is the right choice. It comes with patented air filtration that is capable of removing carcinogenic formaldehyde. However, it doesn’t have any smart features like air quality sensors, remote control, timers and others. If budget is not problem, then we recommend going for top end brands like Mi Purifier, DysonHoneywellHindware and Philips .

Benefits of Air Purifiers

  • It lets you breathe less contaminated or polluted air.
  • If you have respiratory issues like asthma, then air purifiers are helpful in keeping the allergens in the air at bay.

Drawbacks of Air Purifiers

  • Air purifiers with HEPA and activated carbon filters have fan which produces noise. Some people hate the noise but some actually like it.
  • Maintenance and Replacements costs are another major setback of air purifiers. Some require to be changed once in 2 months while some once in a year.

Other Ways to Improve Air Quality in my Home:

One of the best ways to address indoor air pollution is to find the source and properly ventilate the rooms. If you want to check if you can deal with indoor air pollution without air purifiers, then we recommend trying the below steps.

  • Keeping the windows open helps to prevent the irritants from getting trapped within the room. If possible, open windows on opposite sides of the room.
  • Vacuum your house regularly. It is better to choose a vacuum that has sealed bag and is HEPA certified because they are best in trapping the dust and don’t recirculate them into the air.
  • Always make sure to change the air filters regularly if you want to maintain the HVAC equipment and maximize the effectiveness.
  • It is better to install exhaust fan in the kitchen, bath and laundry areas. Switch it on before using the rooms. If it is the kitchen, the switch the exhaust fan on before preheating the oven or firing up the stoves.
  • Minimize the usage of candles, lighting wood fires, ban smoking, smoking inside the room. Reducing pollutants sources is sure shot to improve quality of air within the room.

Frequently Asked Questions?

1. How much space does it take?

Well, not to worry, the Air Purifiers are designed to fit into any large or small spaces. All you have to do is to measure the square footage of the area of the room where it will be used. After that you just have to contemplate the CFM and ACH needs. Usually, the manufacturers provide a suggested area or the size of the room to get the best results according to your chosen model of purifier.

2. Are they safe to use?

We can assure you that air purifiers are a safe piece of machinery you can use it in your house without any worry. But there is an exception to this statement, there are purifiers known as ozone producing air purifiers. Such purifiers can cause irritation, allergies, aggravate your respiratory problems, chest pain, cough and even severe lung damage. The HEPA purifiers are very popular and they are ozone free. You can also use ionic air purifiers and never get confused with ozone air cleaners.

3. Where do I place my Air Purifier?

Usually, most of the air purifiers available in the market are designed to clean only a single room. So, we would suggest that you keep it in a room where you spend most of your time, in most cases it is the bedroom. Although, if you have a home office or any other room where you spend most of your time, you can place it there. So, the priority varies from customer to customer. Hence, it will be best to purchase an air purifier equipped with wheel at the bottom. Then, you will be able to move is easily from room to room as needed.

4. How often do I need to use it?

As per the instructions provided by the manufacturers, you will need to use it continuously throughout the day. But when you first turn it on, you should set it at the highest settings, then after a few hours you should change it to automatic. The purifier will adjust. But once you are sure that the air at that specific location has been purified you can change it to the lowest setting, even then the air space will be cleaned.

5. How many purifiers do I need?

Usually, you only require one or two purifiers in your house. The most ideal way is to get one for the living room and one for the bedroom as these are most used places inside any house. Unfortunately, air purifiers are not designed to clear the air between two rooms. They are not that powerful. Still, if you have such space in your house, you need to get one purifier for each room, only then you will get good results.

6. How would I know that it’s time to change the filters?

Most of the purifiers come with an indicator light which alerts you if it’s time to change the filters. Unfortunately, not all the purifiers comes with such convenient feature. If you have such device in your house, you need to check the manual to find out the recommended time of effectiveness for the filters. If that time has passed, you will have to change the filters. The time of filter change varies between three months to a year.

7. Is it difficult to change the filter of the air purifiers?

Most people think that it will be very difficult to change the filter of an air purifier whereas it is quite simple. If you simply remove the front plate of the purifier then the filter will be visible to you. But there are also other purifiers that features a filter at the side or at the backside of the purifier. Fortunately, for you either of the variations does not require any special tool or skill to change the filter. If you are still having problems, read the instruction manual, provided with the purifier.

8. Should I leave the windows open when I am using my air purifier?

The machines like air purifiers are designed to operate in a closed room, for maximum efficiency. The air purifier eliminates all the harmful contaminants from the air like dust particles, pet dander, bacteria etc. making the air breathable for you. Unfortunately, if you open the windows of the room, the contaminated air from the outside will get mixed with the purified air inside your room. The purifier will continue purifying the air as long as there are impurities in the air but ultimately you are not getting to breathe the clean air. So, never ever leave your doors or windows open. Besides the above issue it will also put immense pressure on the purifier

9. How to clean an air purifier?

The clean-up of an air purifier is extremely easy. If you are still having problems then read the instructions below; As you are using an electronic device, you need to unplug the power cord, first. After that, take a clean cloth and wipe clean the outer exterior of the casing. Now, remove the cover of the filter. Remove the filter and then wash them using soap and water. Dry them out. Then, put those washed filters back into their place. Attach the external cover and plug in. And it’s done!

10. Can they cause Sore Throat?

No, there is no air purifier known to have caused sore throat. If you must know, the usual cause of sore throat is bacteria and viruses, and air purifiers are known to help preventing sore throat by eliminating their presence from the air.

11. Are they capable of removing Asbestos?

Yes, the air purifiers are capable for removing asbestos but you need to purchase a specific one which must be equipped with a HEPA filter. The size of an Asbestos particle ranges from 0.7 to 910 microns and HEPA filter are capable of removing 99% of them.

12. Can it help with COPD?

Yes, an air purifier can help with COPD by making it easier for the people with COPD to breathe by simply destroying the airborne pollutants that causes lung irritation. But the purifier must be equipped with a HEPA filter and never ever get an ionizer as the ions may trigger COPD exacerbations.


The air purifier is an essential buy for every modern urban household. The pollution in the city has reached dangerous levels, and the need to allow our children breathe clean air is apparent and it is extremely necessary.

So, if you are looking to buy one you have already made a great decision. Our top recommendation on this list is the powerful Mi 2S Air Purifier An average sized room can be easily purified with this air purifier. With a commendable CADR value of 310 m3/hr, it claims it can cover a 400 sq.ft room. H11-grade filtration technology and that lightweight build also make this product very desirable. Priced competitively being an Mi product, it also comes with a 1 year warranty. Overall, as you can see, this particular air purifier is an all rounder in every way.

There are more air purifiers with their own unique features and capabilities. It might suit you better, thus we highly recommend you to go through our entire list before going for the purchase.

Let us know your thoughts in the comment section below!