Best Air Purifier in India (2021) – Reviews & Buying guide

We all seek for healthier air to breathe at home, especially when we live in an area with high indoor pollution levels. In this regard, an air purifier comes as a boon. If you go for the best air purifier in India, they come with aerodynamic design and smart filters to remove ultra-fine pollutants from entering your home.

Not just pollutants, they remove any harmful gases such as formaldehyde, TVOC and odour too. But how to make a smart choice with so many options available in the market? Worry not. This list will help you find the best air purifier in India. Also, don’t forget to read the buying guide after the list of 10 best air purifiers for home.

Best Air Purifiers in India 2021

1. Philips Series 1000 Air purifier

Philips AC1215-20 Air purifier

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If you are looking for the best air purifier in India that provides better air quality along with a germ-free living environment, Philips Series 1000 Air Purifier will tick all your checkboxes. With its in-built 4-stage filtration, the Philips Air Purifier can remove up to 99.97% airborne pollutants.

This purifier by Philips is quite efficient for removing allergens and pollutants such as dust, smoke, pollens, mites, microbes, etc. from the air. The integrated Vitashield Intelligent purification senses the present air quality automatically and produces Effective Filtration Size that can remove ultra-fine particles as small as 0.02um. It is more well-suited for small to medium rooms of 226-333 sq ft., and would only take about 12 minutes to purify the air.

Coming to features, you will be getting the cutting-edge aerodynamic design and NanoProtect Pro Filter. Thanks to that, the air purifier effectively removes 99.90% of bacteria and viruses, including the H1N1 virus. It also comes with a Healthy Air Protect alert that notifies you whenever it is time to replace the filter. Adding to the list of convenience and features, the Philips Air Purifier also provides you with real-time air quality feedback from time to time. The four-colour indicator on the dashboard will also let you view the real-time air quality.

This power-efficient purifier is 100% Ozone free and as tested by ECARF, is also quite allergy-friendly. That makes it suitable for patients with airborne allergies. Pair this with its smart night-sensing mode that automatically dims the lights and lowers its sound, and you will be assured a quality sleep at night. Additionally, if you have a child in your family, this should be your go-to purifier due to its child-lock feature that can save you from unintended changes caused by toddlers or kids.

This Philips Series 1000 Air Purifier can be termed as the best air purifier in India so that it tops in our list.

Pros

  • Energy Efficient
  • Auto-Purification Mode enabled by Filter HEPA Series 1
  • Easy One-Touch Control Panel
  • Real-Time Air Quality Feedback
Cons

  • Available with only One Colour Option

2. Honeywell Air Touch A5

Honeywell Air Purifier

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With a versatile coverage area and efficiency, the Honeywell Air Touch A5 bags the second position in the best air purifier in India list. This powerful air purifier caters to those users who are willing to shed a few thousands of rupees in exchange for better air quality in their homes. Especially for people suffering from airborne allergies or breathing difficulties, this air purifier has a lot to offer.

Armed with high-efficiency HEPA and activated carbon filter, this air purifier claims to remove 99% of microscopic pollutants and allergens above 0.3 microns including PM2.5 and pollens. The A5 purifier provides what Honeywell describes as “3D Air Flow”. This technology is promoted by the three air vents located on each side and bottom of the purifier, enabling pure air to reach you even at the farthest corner of your room.

Boasting a three-stage advanced filtration system, the A5 even removes formaldehyde, toxic gases, VOCs and odour quite efficiently. With approximately 3000 hours of filter life, this system can work for upto a year if you use it for 7-8 hours daily. However, the best part about the filtration system is that it comes with a washable, and therefore, reusable pre-filter that removes larger dust particles, pet hair/dander, soil etc. thereby improving the life of HEPA filters.

Honeywell did take into consideration the value of time with the A5. It takes less than 10 minutes to clean a room of size up to 30 Sq.m. You will also be surprised that even with the high CADR (Clean Air Delivery Rate) of 250 cu.m/hr, the purifier consumes power equivalent in the range of 1 to 3 CFL bulbs.

Rest features that make A5 a tough competition to other purifiers are the child-lock system, low sound operation, automated timer, and three colours LED indicator. With versatile features, Honeywell Air Touch A5 is the best air purifier in India available under Rs 10,000.

Pros

  • Easy Installation
  • 3D Air Flow Design
  • Completely ‘Ozone Free’
  • Child-lock Safety Feature
Cons

  • Well-suited for medium-sized rooms only

3. Coway Air Purifier AP-1009 Sleek Pro

Coway Professional Air-Purifier

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Next up on our list is the air purifier by one of the world’s most popular brands, Coway. The AP-1009 Sleek Pro is Coway’s latest addition to its line of air purifiers. The multiple award-winning air purifier is the best option to go for if you are looking for a device appropriate for patients with respiratory disorders, newborns or even for those looking for high-quality professional-grade air purifiers.

The AP-1009 provides a three-layered air filtration system that includes a Pre-Filter (for trapping PM10 Particles), and a Patented Urethane Carbon Filter (for deodorizing the air while removing VOCs). It also contains a Multi-Layered Anti-Virus Green HEPA Filter (for efficiently trapping PM2.5 particles while also eliminating viruses & allergens). Now if you consider the price point, that is a lot for the purifier to provide.

If you are located in one of those localities where breathing itself becomes a difficult task, this device is going to be your best bet. It will effectively filter all pollutants, allergens, dust mites, smoke, pet dander, germs, bacteria and possible mould.

Coway’s smart pollution sensor will indicate the pollution level, and the auto-mode will immediately start processing the air accordingly and provide you with clean air in about 15 minutes. However, if you want a quicker cleanse, you can switch to the Special Turbo Mode, and you will get clean air in a few minutes. To top off the list of features, the AP-1009’s noise-levels of 22-49 dB, can go noiseless like a whisper when on Night Mode.

You will also be alerted by the Filter Replacement Indicator whenever it’s time to change the HEPA Filter & Carbon Filter, thus ensuring optimum breathing conditions and your overall well-being. Also, the use of green technology allows the purifier to use minimum power and provides 100% Ozone-less filtration, which promises nothing but care-free and refreshing breathing experience every day.

Pros

  • Intelligent Air Quality Monitor
  • Use of Green Technology
  • Special Turbo Mode
  • Ease of Operation
Cons

  • No Child-lock feature

4. Havells Freshia AP-40 Air Purifier

Havells Freshia Air Purifier

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With a high CADR rate of 350 m3/hr, the Havells Freshia is one of the best air purifiers in India well-suited for medium to larger rooms averaging around 755 sq.ft. With quite a few innovations and improvements, Havells has come a long way with its Freshia AP-40 which is often ranked as one of the best air purifiers in India currently available.

If those allergens and pesky odours have not allowed you even a moment’s peaceful breath, it is time you consider getting the Freshia AP-40 for your home or office space. With three levels of fan, speed users are allowed for a manual setting which is also complemented by an Automatic Mode.

The device is equipped with AiroFresh Technology providing a total of 5 stages of filtration: Pre-Filter, Cold-Catalyst, Activated Carbon, Antibacterial and HEPA. It also comes with a remote control which only adds to the users’ convenience. Not only that, but Havells claims a removal efficiency of 99.18 per cent as it can filter P.M. 2.5 up to 0.3-micron particles and bring down the AQI from 168 to 50 in just 10 minutes.

If you’re on the hunt for the best air purifier in India, this Havells Freshia AP-40 Air Purifier can be a right choice as it comes with features like Sleep mode, Automatic Filter Replacement reminder, Dust Sensor, Child lock, Manual Timer Setting, Silent mode, Health Plus Lock with easy mobility. In addition to these, AP-40 comes with a 3-Color indicator for varying PPM levels. The Green stands for 1-50, Orange for 51-100 and Red for 101-500 and above. This feature comes in really handy if you live in urban or suburban areas with high pollution levels.

Installation is fairly easy as all you will ever have to do is plug it in, and it will be up and running immediately.

Pros

  • 5-Stage Filtration Process
  • Unique Safety Controls
  • Allergy-Friendly
  • Front Cover Open Protection
Cons

  • Lacks Wheel Castors

5. AviZo A1606 Air Purifier

AviZo A1606 Premium Air Purifier

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AviZo is a new Indian brand that has been quite popular in the domain of air purifiers ever since its inception. Among the numerous air purifiers manufactured by AviZo, the A1606 has been the most well-received and loved device by users. Backed by advanced Japanese technology, the A1606 proves to be aesthetically pleasing, user friendly and, more importantly, an effective machine.

The larger than usual triple-filters on AviZo’s A1606 proves to be highly efficient and effective in case you are a pet owner or sensitive to air quality. The fine Preliminary Filter traps larger particles such as dust, lint, fibre, hair and pet danders, the Activated Carbon Filter absorbs nasty odours and fumes, while the anti-bacterial coated True HEPA Filter gets rid 99.97% of airborne particles as small as 0.3 microns (800% smaller than PM2.5).

This air purifier is suitable for rooms up to 600sq. Feet, it will be perfect for most standard room sizes, including bedrooms, hall rooms, nurseries, conferences, office or study. What makes it even more appealing is the extra-sensitive sensor that automatically senses and reports air quality levels digitally on the LCD screen. You can just glance at the on-screen numeric AQI value to know the exact and real-time air quality in the room. The LCD is also capable of showing you Filter replacement messages whenever it is time so that you will never have to keep a track or worry about it.

As AviZo claims, the purifier is indeed aesthetically pleasing and flaunts quite an elegant and sleek look. Also, its compact size ensures it fits and complements any space it is placed in. However, the key feature that brings the A6106 in our Top-5 list of the best air purifier for home is the integrated Japanese technology keeps secondary pollution caused by thermal desorption of pollutants at bay. The device’s minimal carbon footprint is also something that you might want to consider. If you’re looking for the best air purifier in India that looks elegant and sleek, this AviZo air purifier is the best option for you.

Pros

  • Compact & Portable
  • Advanced Japanese Technology
  • Low Carbon Footprint
  • Pan-India Post-Sale Support
Cons

  • A Bit Expensive

6. Mi 2S Vertical Air Purifier 

Mi 2S Vertical Air Purifier

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The Mi 2S Vertical Air Purifier (White) is one of the recent launches by the Chinese conglomerate Xiaomi. The air purifier works on advanced technologies which include impressive and powerful air cleaning filters. It also comes equipped with many appealing features which is suitable for both home and office usage. The smart cleaner can be easily connected with your smartphone through the Mi Home app for more customized and seamless work functioning.

The machine has a superb cleaning speed where it can completely change the air quality of a room within just 10 minutes. It comes with an OLED display, Laser Particle sensor, and remote control for easy access through its app. With the Mi Home App, you can easily make changes to its speed, schedule on/off timings, and even check the filter status from anywhere. Moreover, the app also allows you to curate different modes with variable time options, so each time you don’t have to customize your requirements.

Designed using three layers of advanced protection, the air purifier effectively gets rid of harmful particles, hair, bacteria, formaldehyde and even nasty odours. Additional features which come handy for the air purifier include efficient tower-structure design, maximum power output with silent functioning, lower maintenance, smart control, remote control, set timer, high-precision laser sensor, etc. Similarly, the HEPA filter is not only advanced but is considerably cheaper when compared to other brands. The night mode also automatically dims the OLED brightness along with the machine’s sound for a comfortable and peaceful sleep.

Pros

  • High-quality activated carbon layer
  • Low energy consumption
  • Automatic brightness adjustment
  • OLED display with temperature and humidity indicators
Cons

  • Repeated change of air filters required

7. Dyson Pure Cool Link Tower WiFi-Enabled Air Purifier

Dyson Pure Cool Link Tower WiFi-Enabled Air Purifier

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Next on our list is Dyson Pure Cool Link Tower air purifier (TP03) which comes pre-loaded with many exciting features. The sleek and trendy design makes it one of the must-have for a cleaner home. Not only this, but the smart control also gives you an upper hand to decide the most favourable air filter setting for your home-based upon your requirements.

The air purifier comes with a highly-efficient Air Multiplier and oscillation technology that projects purified air across the whole room. So, you can expect a room wholly refreshed within a couple of minutes. The intelligent purification removes allergens, pollutants, dust, pollen, bacteria, pet dander, VOCs, harmful gases/odours, therefore giving total protection. Moreover, the 360-degree vacuum-sealed HEPA filter contains an activated carbon layer which is certified to be Asthma and Allergy friendly by AAFA (Asthma and Allergy Foundation of America). While the compact size is a beneficial point for saving wastage of space, the filters ensure that the pollutants stay in no matter what.

Another unique feature of the cleaner, which makes it a must-have is its automatic recognition and monitoring of the air quality. So, if the machine senses degradation in the air quality, it automatically sends you a real-time report through the app for immediate action. It also doesn’t contain any fast-spinning blades and hence is a wise choice for families with children or pets. Additional benefits include a set timer, sleep timer, night mode, 360-degree air intake, easy-to-clean aperture, auto-mode, ten air-speed settings, etc.

Pros

  • Dual functionality of the fan feature
  • Automatic monitoring and real-time alerts
  • Lower face velocity
  • Magnetized remote control for easy top-docking
Cons

  • Return period is for three days

8. Sharp Air Purifier for Homes & Offices | Dual Purification

Sharp Air Purifier for Homes

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The Japan-made Sharp Air Purifiers comes at a budget-friendly price. The air purifier features a plasma cluster technology to offer a safe air-quality. Moreover, due to its compact and stylish design, it is also suitable for both office and home environments. The powerful air suction can absorb almost anything, thereby safeguarding you and your family from many fatal airborne ailments. It has also been certified by 31 global labs for its utmost protection against harmful elements in the air.

The machine uses the plasma cluster technology where it radiates both positive and negative ions to the air for a better defiltration. These ions are generated through plasma discharge which means lesser energy consumption. Moreover, as these ions readily bind harmful particles, allergens, dust, and fatal bacteria and viruses, it has been approved worldwide by many scientific labs. It has been designed to cater to the needs starting from the roof to floor. This is done with the 20-degree airflow and haze mode. The haze mode is best suitable for locations with higher rates of pollution. Furthermore, it also comes with a LED display with different colour options based upon the pollution level.

Additionally, the cleaner works with a dual smart purification technology. The technology makes use of highest Grade H14 HEPA Filter, Voluminous Granular Active Carbon Filter, and a Pre-Filter. The air comes through these filters get automatically cleaned off any micron pollutant particles. Similarly, the elegant and stylish design makes it an appealing add-on for your home. It can be used for 24/7 in a non-ventilated room without any issues. Other beneficial features include auto-restart, auto and manual modes, haze mode, low noise level, no vibrations, ABS material build-up, dust and odour sensor, five years long warranty, and easy availability of spare parts. The only downside is that it does not have any smartphone integration.

Pros

  • Covers the entire room
  • Low power consumption with various modes
  • Lightweight as compared to other air purifiers
  • Offers skin beautification with hydrogen bonding in the air
Cons

  • No smartphone connectivity

9. Mi Air Purifier 3 with True HEPA Filter and Smart App Connectivity

Mi Air Purifier 3

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The Mi Air Purifier 3 comes with a true HEPA filter which can get rid of almost all kinds of dust particles, allergens, pollen, pet dander, hair and more. As every other product of Mi, it supports smart connection and accessibility with the Amazon Alexa or Google Assistant where it can be used remotely using voice commands. Apart from that, you can also use the cleaner through your smartphone app.

Unlike many of its contenders, the Mi Air Purifier 3 covers a large area of 484 sq. ft. within a few minutes. It runs on a 3-layer filtration process which can effectively clean out pollutants up to particle size of 0.3 microns. This is done through the laser particle sensor, which automatically accesses the air quality when the machine is in use and instantly notifies the user. Moreover, the HEPA filter offers a Clean Air Delivery Rate of 380 cubic meters per hour while intaking and accessing the air quality from 360 degrees. The machine also bears an easy-to-use OLED Touch display with numerous colour options that differs according to the pollution level.

Not only is the air purifier innovatively designed but is also lightweight, hence easily portable. Furthermore, it also has a super-powerful air filter engine which can deliver about 6333 litres of clean air per minute. Similarly, for its easy application, it can be easily connected with your smartphone through the Mi Home app where you can remotely use the air cleaner from anywhere. The app can be used for setting different modes, scheduling on/off, choosing air cleaning features, and more. The compact and trendy design also comes with a promise of low power consumption, and negligible noise production while in the working stage.

Pros

  • 3-layer composite filtration with True HEPA Filter
  • 360-degree triple layer filtration
  • Works with voice assistant
Cons

  • Price is on the expensive side

10. Philips High-Efficiency Air Purifier

Philips High Efficiency Air Purifier

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If you are in search of the best air purifier in India that costs low, the Philips AC2887 can be the best option for you. The small yet downright trendy design of the new addition, also makes it quite portable and popular amongst families of all types. Moreover, the air cleaner also comes with a two years warranty and has easy availability of spare parts everywhere.

The Philips air purifier AC2887 comes bearing a Vitashield Intelligent purification technology which can automatically access the air quality. This saves you from manually adjusting the air filtering features every time. Moreover, the machine can filter and identify airborne pollutants as small as 0.003microns, thereby eliminating almost 99.97% of harmful agents. Similarly, the Clean Air Delivery Rate is about 333 cubic meters per hour, and can easily filter a standard room within as low as ten minutes. Designed especially for the master bedroom, it can be adjusted to three modes: General, Allergen, and Bacteria & Virus modes. The allergen mode automatically assesses the air quality and gives an extra boost when required.

Some of the more beneficial features include silent running, smart light control, aerodynamic architecture for maximum output of clean air, etc. So, it projects airflow in a much powerful manner as compared to its competitors. You can also turn on the night mode for a comfortable sleep as it produces as low as 20.5dba. Furthermore, the machine doesn’t require high maintenance and can work superbly with regular air filter changes. However, in case the air filter is not changed, the machine stops working, therefore helping you breathe clean air only.

Pros

  • Can filter air pollutants as small as 0.003 microns
  • AreaSense gives real-time updates of air quality
  • Filters out TVOCs and formaldehyde seamlessly
  • Three smart pre-settings for air filter quality
Cons

  • Poor after-sale service

 

It is worth acknowledging the fact that these air purifiers will demand periodic maintenance for functioning smoothly in the long run. You may have to clean the filters and run a vacuum cleaner to suck out extra dirt sitting on its body for long.

How to Choose the Best Air Purifier for Home

As the number of industries, factories and vehicles in our cities keep increasing, the pollution in our air also keeps increasing exponentially. After a long day at work when you come back home after dealing with all these pollutants, you would expect that the air in your house should be better. But, guess what? It is not. In fact, experts believe that the air inside your house could be a lot more polluted than the air outside.

Indoor pollutants are often generated by building materials, air fresheners, and perfumes, cleaning products, furniture, carpets and upholstery. And these pollutants keep building up as time goes by. This is because in contained spaces, air cannot circulate freely and does not have a chance to clean itself up. When you breathe the air containing these pollutants, it can lead to a variety of infections and respiratory problems.

This is the reason why air purifiers are becoming increasingly popular by the day. They are no longer a luxury but an absolute necessity.

How do air purifiers work?

Air purifiers have a simple mechanism of working. They use motorized fans to draw the polluted air into the device. Inside the device, this air passes through a series of filters several times to get rid of all the particle and chemical pollutants in it. Some best purifiers in India also have the mechanism to get rid of the microorganisms like viruses and bacteria that might be present in the air. The purified air is then released through air vents into the room.

Advantages of using air purifiers

If you are still not sure about whether or not you want an air purifier for your house, then here are a few benefits of using air purifiers.

1) They ensure that you and your family are breathing fresh and good quality air. This avoids infections and other respiratory conditions.

2) No matter how much you clean your house. There will always be dust floating around your house. But, air purifiers trap almost all the dust in your home, giving you a clean and fresh feeling.

3) They remove odours. Whether it is odours from cooking, odours from perfumes or just any unwanted odours floating around in your house, your air purifier can get rid of all them for you.

4) They can neutralize smoke. If you smoke or have a family member who smokes, then the smell and smoke from cigarettes can be harmful to all the other members in your family. Using an air purifier neutralizes the smoke in the air, making it cleaner for others.

5) Having a pet is great. But sometimes, pets can release a lot of allergens and odours into the air that are not good for you. Air purifiers trap these allergens. So now you can spend more time with your furry friend without worrying about allergies.

6) They can trap up to 99% of all the airborne bacteria. This is why, if you have a weak immunity system, air purifiers are highly recommended for you.

Things To Know Before Buying Air Purifier for Home Use

As the pollution in our cities keeps increasing, the demand for the best air purifiers for home use is also increasing by the day. To keep up with this demand, companies come up with a variety of air purifiers that can match your needs and demands. If you are on the hunt for a good air purifier then, it can get really overwhelming to choose between all the different options that are available. This is why we have made this buyer’s guide that covers all the things you need to know before buying the best air purifier in India in 2021 so that you can make an informed decision.

1) Air Purifier Technology

Air purifiers use many different kinds of technologies to filter out pollutants and make your air cleaner. Here are a few of the most popular ones.

a) HEPA Technology: HEPA stands for High-Efficiency Particulate Air. This technology has been in use for many years now and can be seen in common household appliances like air purifiers and vacuum cleaners. The HEPA filter is an extremely fine, almost fibre like material that has been folded back and forth several times and it resembles the shape of an accordion. It is capable of filtering out 99.97% of all particles that are larger than 0.3 microns.

Air Purifier HEPA

For comparison, the human eye can only see the particles that are greater than 10 microns. So, this filter traps chemicals, germs, moulds, pollutants and other substances that are not visible to the human eye. From a sanitation perspective, it is one of the best technologies out there as it can reduce the chances of infections in your family.

HEPA technology uses a powerful fan to draw polluted air into the purifier. In the purifier, this polluted air comes in contact with the accordion-shaped filter. This filter creates a maze of fibres that has ample amount of space for the air to be pushed through. As the air passes through this maze, all the particles, pollutants and other unwanted substances get trapped into the filter. For bacteria, virus and other small particles to get trapped the air needs to pass through the maze 2 or 3 times.

At the end of the third or fourth cycle, you will have clean and breathable air. One thing to keep in mind is that the dust that gets trapped in the filter stays on it. So, you will need to replace the filter every 1 or 2 years depending on your needs. But the best part about HEPA technology is that it does not create any harmful by-products and is extremely safe to use.

If you have family members who suffer from asthma, allergy or any other respiratory conditions then you should definitely get a purifier that uses this technology.

Pros

  • Can trap all the particle pollutants present in air
  • Useful for people with respiratory conditions
  • Does not create by-products

Cons

  • Expensive in the long-term as filters need to change frequently
  • Cannot trap harmful gases or odours

b) Activated carbon technology: One major drawback of HEPA technology is that it is made only for particulate matter and cannot trap chemicals, gases or odours. This is why we have activated carbon technology. Activated carbon is a chemical form of carbon that has been heavily processed to make it porous. This porous structure allows for air filtration. The popularity of activated carbon is increasing by the day and it is used in common products like face washes because of its excellent ability to absorb impurities and chemicals.

Activated carbon filter air purifier

The activated carbon filters are made up of a number of molecular sized pores that have strong chemical bonds. These pores allow it to work almost like a sponge absorbing all the toxic gases, chemical pollutants, odours, tobacco and smoke. These trapped products are not back into the air but are completely absorbed by the activated carbon. This reduces the possibility of recontamination.

When activated carbon purifiers are used in households, they do an excellent job of absorbing multiple chemicals like formaldehyde which is found in carpets, upholstery and wood panels. Perfume odours and harmful chemicals from all the other household substances can also be eliminated easily. While activated carbon purifiers can do an excellent job in eliminating gases and chemicals, they cannot trap particle pollutants.

So, depending on your family’s needs, requirements and exposure to chemical substances, you should decide which kind of purifier works well for you. If you need both of these functions, then you can go for high calibre purifiers that can eliminate particles as well as chemical pollutants.

Pros

  • Absorbs harmful chemicals, gases and odours with ease
  • Does not cause recontamination
  • Does not produce harmful by-products

Cons

  • Cannot capture particle pollutants

c) UV Technology: UV technology is not a technology that can be used on its own. However, when combined with other particle filters, it can work wonders. UV Rays are popularly known for being able to kill living cells and this is why they do an excellent job in killing in microorganisms. Air purifiers that use UV technology usually have an UV lamp installed as a post filter. The polluted air after passing through the particle filter goes through this UV lamp and all the bacteria, viruses and other microorganisms present in the air get killed very effectively.

Apart from this, UV filters are also extremely useful for converting oxygen and water molecules found into air into ozone and hydroxyl. Hydroxyl is popular for reacting harmful chemicals and transforming them into harmless substances. The ozone created in this process is not useful and it is a harmful pollutant. However, high-end UV filters have the technology to minimize or totally eliminate the ozone content. Can this type of purifier kill 100% of germs then? Well, that depends on a lot of factors. The effectiveness of the UV filter depends on the amount of time the air is allowed to be exposed to the UV rays and the wattage. The longer the air is exposed to UV rays, the more germs get killed.

Even though this is a very effective method of killing microorganisms and making the air healthier, the UV technology is not good enough to be used on its own. It has no effect on particle and chemical pollutants. It is better used alongside other filters.

Pros

  • Very effective in killing microorganisms and controlling diseases
  • Has a wide range of applications in hospitals, houses and public places

Cons

  • Produces harmful by-products like ozone
  • Cannot be used on its own
  • Is not effective on particle pollutants.

d) Ionic technology: A natural particle with either positive or negative charge is known as an ion. Ionic purifiers use chemical injections and react with pollutants in the air to get rid of them. They were hugely popular in the early 2000’s but as HEPA filters gained popularity, ionic filters were brushed under the carpet.
But, they can be very effective if used well.

The ionic purifiers are of two types 1) Ionizers and 2) Electrostatic precipitators.

The difference between these two types is huge.

Ionizers use a large number of negative ions. Negative ions are just oxygen atoms that have gained an electron. This extra electron is not stable and tends to react with particles such as pollen, dust, chemicals and other toxic substances to form new compounds. This process keeps repeating until the newly formed substance becomes so heavy that it cannot stay in the air.

The particle then settles down on nearby objects like window panes from where they can be wiped off very easily. The problem with ionizers is that they are not really getting rid of pollutants. Rather, they are just finding a way to take away these pollutants from air and get them to settle down on other places where they might not be as harmful.

Electrostatic precipitators, however, seem to overcome this problem. They work similarly by producing negative ions that react with toxic substances. The difference is that the newly formed substance settles down on inbuilt plates that are positively charged. This way, you can avoid the hassle of having to clean windows and doors frequently. This is why the electrostatic precipitators are much more popular than ionizers.

But in the process of breaking down toxic substances, both the ionizers and the precipitators produce unnecessary by-products like ozone.

Pros

  • Ionic purifiers can get rid of both particle and chemical pollutants
  • They are filter less and can save money on constant filter replacements
  • They are much quieter

Cons

  • Less effective than HEPA filters
  • Produces harmful by-products
  • Does not really eliminate or absorb pollutants only masks them

e) Ozone generators: As the name suggests, these purifiers intentionally produce ozone to get rid of toxic substances and microbes. They are definitely not suited for household use but they can be very useful for commercial purposes. These ozone generators usually use UV rays to breakdown the nearby oxygen molecules and convert them into ozone. This ozone is a highly reactive substance and it can react with the nearby pollutants and convert them into other harmless substances.

In large factories and industries, ozone generators are used to disinfect the air and kill harmful microorganisms. However, it has no effect against particle pollutants or biological contaminants. The problem with this method is that ozone itself is a very harmful substance. Though it can get rid of germs and other pollutants, it is not safe for humans to inhale ozone. It can damage your lungs and cause other respiratory issues. Therefore, ozone generators are strictly not recommended for household use.

Pros

  • Can effectively kill microorganisms and get rid of chemicals

Cons

  • Harmful to health
  • Does not work against particle pollutants

The verdict:

Among all the 5 different types of technologies used in air purifiers, we believe that HEPA and Activated Carbon Technologies are highly recommended for household usage. They can filter your surrounding air effectively and make it cleaner.

2) Size of your room

Probably one of the most important factors that you have to consider before buying the best air purifier is the size of the room in which you intend to place your air purifier. Air purifiers come in different sizes, power efficiencies and delivery rates. There is no one size fits all mantra here. You have to choose a purifier based on the size of your room.

The coverage area of the purifier that you choose should be able to match the size of your room. If the coverage does not match the size of the room then the air in that room will not be able to be purified efficiently. It is always better to get a larger sized unit as they can clean up all the air in your room and are more noise efficient as well.

3) Air Purifier Placement

The placement of your air purifier is also an extremely important factor. Large living rooms and rooms with high ceilings are usually very difficult to purify. But, if you want optimum air purification even in such large rooms, then you should look out for the best air purifier for home that always attempts to direct purified air towards the side of the inhabitants.

Also, when you place the air purifier inside the room, the space around it should be at least 18 inches. So when choosing a purifier for a particular room it is very important to keep these dimensions in mind. If your room is small and you cannot leave 18 inches of space for air purifiers, then you should go for a smaller one. In your bedroom, the distance between the headboard of the bed and the purifier should be 6-10 feet.

3) Filters

As mentioned before, air purifiers come with a variety of filter options to choose from. You also have the option to choose filter less options though they might not be that effective. It is always better to choose purifiers that have multiple filters as they can provide more efficient filtration and cleaner air. But how do you know which filters are best suited for you? Well, here’s a quick guide.

  • If you have allergies, asthma or other respiratory problems or if you have family members that have these conditions, then choose HEPA filters.
  • If you live in an industrial area or near a construction site, choose a purifier that has HEPA, pre filter, and activated carbon filter.
  • If you live in a house with pets, choose HEPA and activated carbon filters as they can get rid of fine particles like pet hair as well as any unnecessary odours from pets.
  • If you or anyone in your family has a weakened immunity or is easily prone to flu and other infections then, you might want to get a purifier that has HEPA, Activated carbon and UV filters.
  • If you don’t like replacing filters constantly, then you can choose the filter less options like ionizers.

4) Clean Air Delivery Rate (CADR)

Clean Air Delivery Rate or CADR is the measure of the volume of air that an air purifier can filter. It is usually measured in cubic feet per minute. This measure covers both the air flow capacity and the particle removal efficiency. It is very important to look out for this measure because the higher the CADR the more air can be filtered and purified.

Manufacturers state that, if the height of the room is 8 feet then, the CADR should be greater than its area divided by 1.55. So if the area of your room is 450 sq. then the CADR for it should be greater than 258 cubic feet per minute. In India, you might not find the CADR that you are exactly looking for. But anything in and around 200 should be able to do a good job for your room.

5) Air change per hour (ACH)

The Air Change per Hour or the ACH rating is another important factor that you should look out for while buying purifiers. In simple terms, it is the number of times that the air in the room is filtered by the purifier. So for instance, if the ACH rating is 3, then the air in the room is filtered about 3 times an hour. This is a measure that determines how efficiently your purifier is able to work.

For people with respiratory ailments, allergies or asthma, experts recommend using a purifier that has a minimum ACH rating of 4. Most manufacturers usually don’t mention the ACH rating of the purifier but it is important to ask for it before you buy.

6) Noise efficiency

Some air purifiers can be extremely noisy while operating. This can be very irritating as air purifiers are mostly used in bedrooms where you usually want it to be silent. It can also be extremely annoying for your neighbours, pets and elderly people in your home. Therefore it is very important to check the noise efficiency of your air purifier before purchasing it.

The amount of noise your air purifier makes depends heavily on its design and motor quality. Filter less air purifiers are much less noisier when compared to filtered air purifiers but they are not quite effective. Therefore, it is advisable to go for a good quality device that is large in size and run it at slow speed to reduce the noise. Air purifiers from some companies are simply less noisy than others. It is always better to check the noise efficiency in the store itself before purchase.

7) Brand value:

When buying an appliance as valuable as an air purifier, it is very important to choose a trustworthy brand. Trustworthy brands provide high quality and superior build, maximum performance, elegant designs, greater stability and higher warranty periods. These appliances are usually more durable and long-lasting when compared to other brands. More often than not, low-quality air purifiers use cheaper filters that do not provide effective filtration and need to be replaced constantly.

Therefore, it is always advisable to choose a trustworthy brand. Some popular brands offering the best air purifiers in India are Dyson, Coway, Philips, Mi, Atlanta, Honeywell, Kent, Blue Star, Sharp Air and American Micronic. It is very important to do thorough market research about a brand before purchasing.

8) Warranty and Customer Service

It is always important to check the warranty of an expensive electric appliance before purchasing it and air purifiers are no exception. A warranty of 2-3 years should be ideal for air purifiers. This ensures that you are buying a quality product. Also, check whether the warranty is only for motor failures or for the body as well. A lot of companies tend to provide warranty only for the motor and this must be double-checked.

Another important factor that needs to be checked is the availability of customer service. If your product gets damaged and needs to be serviced, you need to be able to get it done in a hassle freeway. First of all you need to choose a company or a brand whose service centres are within your city. Then your brand should also be able to provide you contact numbers and email ids through which you can get in touch with them easily whenever required.

9) Budget

Budget is always a very important factor to consider before buying a product. Air purifiers can sometimes get pretty expensive, therefore, it is better to decide on the amount of money you are going to spend on it well in advance. Once you have decided the amount of money you want to spend on your air purifier, you can look at features, sizes and accessories available for that budget. Deciding on a budget early on also makes it easier for you to shortlist by eliminating all the other options that do not fall in your budget range. However, if you want a branded or a high quality appliance, you must be willing to spend a significant amount of money.

10) External attachments and features

Just like any other electric appliance, air purifiers also come with a variety of external attachments and features that you can choose from. These features are available for different price points. But here are a few features that you need to check for in the best air purifier in India.

– Two or more number of filters: We have seen how different filters have different applications and uses. If your air purifier has just one type of filter, it might not be that efficient. Therefore, it is better if you go for a purifier that has two or more filters that can be used for various functions.

– Filter change/service indicator: Filters tend to fill up with time and need to be replaced from time to time. But, if you have to physically check whether a filter is full, it is quite the hassle. Therefore, check for the filter indicator. This feature shows you when a filter needs to be changed. If any other parts of the purifier are damaged and need to be fixed, it indicates that too. This is a very useful feature to have.

– Speed adjustments: This feature helps in adjusting the fan speed based on your room size and pollution levels. Some high end models have the option of automatically detecting the pollution level in the air and adjusting the speed accordingly.

– Child safety: If you have children at home then, this is definitely a feature to look out for. Children are curious and loving playing with tech items. This feature almost acts like a child lock disabling all the buttons when in child mode so that your child will not be able to change any settings or cause damage to the device unknowingly.

– Remote control: Having a remote control makes controlling devices very easy. You can adjust the fan speed, turn on or turn off your device and do multiple things from your couch or bed without having to get up every time. The Dyson purifiers come with a remote control. Some models like LG and Philips can be controlled through a mobile app.

Humidifier: If you live in regions with extremely dry climate, then this is for you. You have the option to buy an air purifier with a built in humidifier. It basically adds moisture to the air in your surroundings to prevent dryness. It is extremely useful as it can promote better sleep and reduces infections. If you have babies then this is all the more useful.

Air Quality Display: This is another advanced feature that is extremely useful for you and your family. It helps you keep track of the quality of air that you are breathing at any point of time. It uses sensors to detect particle and chemical pollutants and indicates to you if your air is not healthy to breathe. This is a wonderful feature to have.

11) Portability

This is not a very important feature, but having a compact portable vacuum cleaner makes it easier for you to move it around the house to any room that you might prefer. You might also be able to take it with you if you travel constantly. You can use it at home, office or any other place of your choice as the portable ones are quite good looking and stylish.

However, they come with limited features, require frequent cleaning and might not provide effective filtration like the full sized ones.

12) Quality certificates:

Any electronic appliance that you choose to buy should have an ISI certificate. An ISI certificate is the mark of safety and quality. However, if you want a really good quality product, then also look for the ISO mark. ISO marks are given not to products but to companies. If the company that you chose is trustworthy, it will have an ISO certificate as well. Check for these quality certifications before buying your appliance.

Frequently Asked Questions

If you still have any doubts about the working and functioning of air purifiers, then here are a few FAQ’s that might help you.

1) Will an air purifier protect my entire house?

No, just like ceiling fans and air conditioner, air purifiers can also work only for one room at a time. If you want to purify multiple rooms, you need to get two or more purifiers. Or, you can choose the portable air purifiers that can be carried around the house and used for any room. To check how much area your air purifier can cover, check the CADR rating for it. This should give you an idea of how much your air purifier can protect your house.

2) How often should I use an air purifier?

This totally depends on the type of vicinity that you live in. If you live near construction areas or industrial hubs where pollutants can creep into your house very often then you might have to use it every day. But, if you live in relatively less polluted areas then you can use it 4 or 5 times a week. Also, if you have large spaces you might need to use it more often. It is better to run your air purifier at regular intervals so that pollutants and dust don’t accumulate in your house.

3) Where should I place my air purifier?

Place the air purifier in a room that you spend most of your time in. It is better to place it in the centre of the room so that it can trap polluted air from all sides of the room. Also, make sure that there is at least 18 inches of space around the air purifier for optimum air circulation.

4) Do air purifiers make noise?

For any air purifier to function well, it needs to be able push air in and out of the device constantly and this is definitely a noisy process. However, using high quality purifiers that are larger in size can reduce the noise levels in your house. Running it at lower speeds will also ensure that the noise level is less.

5) Can you use air purifiers while keeping the window open?

Yes, you can use the purifier while the window is open. It won’t make much of a difference to its operation. However, if you want it to be 100% efficient it is better to keep the windows of the room closed.

6) How to maintain an air purifier?

Air purifiers are simple devices and do not require a lot of maintenance or attention from your end. Taking just a few simple steps will help it operate efficiently and increase its lifespan.

  • Make sure that your air purifier has service indicators to indicate to you when it is time to change filters.
  • As soon as the indicator is on, replace the filters without any delay.
  • If your purifier has washable pre-filters make sure that you wash them regularly and place them back carefully.
  • Make sure that the air purifier is not crammed into a small space. As mentioned before, there needs to be at least 18 inches of free space around the purifier for air circulation.
  • It is better to close the doors while operating the air purifier to avoid over burdening it.
  • Turn off the air purifier whenever there is dusting, carpentry or any other cleaning work going on in your house otherwise the filters will get clogged up fast. You can switch it on once the work is done.
  • If your purifier starts emitting any unpleasant odours, then replace the filters and keep it in the sun for an hour or two so sanitize it well.

7) How do you know if your air purifier is actually working?

If you are in doubt about whether or not your air purifier is working, you can perform these small tests. Light an incense stick and place it near the purifier. If it is easily soaked up by the purifier then you can conclude that it is working. You can also flash a torch light at the purifier to see if the dust particles are being sucked into it. If you are still in doubt, you can also physically remove the filters to see if any dust particles are being collected in it.

8) It is expensive to buy and maintain an air purifier?

In today’s market, there is an air purifier available for every pocket size. However, larger models with high efficiency can be quite expensive. But, look at it this way, by spending on air purifiers you might be able to protect your health and save a lot of money on hospital visits. Also, once purchased the device lasts for several years so it is worth the money. Coming to maintenance, you will only have to replace the filters once in 2-3 years, so maintaining an air purifier is not that expensive.

Conclusion:

We hope this article has helped you understand all the nuances of buying an air purifier. Most air purifiers these days are expensive and you will have to spend a significant amount of money to purchase one for your home. Therefore it is important to carefully consider all available options and choose the best of the best. This is our list of all the features that you should look out for in air purifiers. Keeping your requirements, preferences and budget in mind, you can choose the product that suits your home the best.

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