Top 10 Best Air Purifier for Home in India 2018

According to World Health Organization, 15 out of 20 most polluted cities are present in India. And the worst part is – the air quality indoors is more harmful than outside. Yes, as per a recent research, gas stoves, electrical appliances, smoke, personal grooming products, poor ventilation and other can release hazardous gases like benzene, formaldehyde, trichloroethylene, and others in concentrated forms which reduce the air quality indoors (1).

Due to bad air quality indoors, people especially children and elderly can become vulnerable to lung diseases and allergies.  Recently, the deaths in Delhi has raised to 30,000 per year due to hazardous pollutants that have a great impact on all-aged people, especially kids and elders who are exposed to allergies, asthma and other lung diseases.

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Air purifiers can improve the air quality from hazardous (300m3) to good (60 – 100m3) with a span of 1 – 2 hours. They are efficient in removing remove ultra-fine particles, dust, pollen, harmful gases, bacteria, virus and other irritants.

While choosing an air purifier, you have to check few things like HEPA filtration, Clean air delivery rate, sound, and others. Our team has researched and tested several air purifying products to pick up the best one for you. Click Here to read the factors we considered.

Top 10 Best Air Purifiers in India 2018

Air Purifier for HomeCADRNo. Of FiltersCoverage AreaBuy Online
Honeywell Air Purifier 300 m3/h3387 Sq. feet Check the Price
Philips 2000 Series Air Purifier333 m3/hr4441 Sq. feet Check the Price
Mi Air Purifier 2310 m3/hr3400 Sq. feet Check the Price
Atlanta Air Purifier170 m3/hr7350 Sq. feet Check the Price
Sharp Air Purifier--6-- Check the Price
Gliese Magic Air Purifier 140 m3/hr5200 Sq. feet Check the Price
Ooze H30 Indoor Air Purifier235 m3/hr7370 Sq. feet Check the Price
American Micronic Air Purifier --3150-200 Sq. feet Check the Price
AIRSPA TMS 16 HEPA Air Purifier180 m3/hr6350 Sq. feet Check the Price
Avizo Air Purifier277 m3/hr3410 Sq. feet Check the Price

Out of the top 10 air purifiers in India for home, “Honeywell Air Purifier” has taken the first place. It deserves the first place as it has 3 stage effective air purification process and clean air delivery rate of 300m3/h.

Best Air Purifiers Brands in India

    1. Honeywell Air Purifier
    2. Philips 2000 Series Air Purifier
    3. Mi Air Purifier 2
    4. Atlanta Air Purifier 
    5. Sharp Air Purifier
    6. Gliese Magic Air Purifier
    7. Ooze H3O Indoor Air Purifier
    8. American Micronic Air Purifier
    9. AIRSPA TMS 16 HEPA Air Purifier
    10. Avizo Air Purifier

1. Honeywell Air Purifier (Highly Recommended)

Honeywell Air Touch i8 42-Watt Air Purifier

Honeywell is one of the popular brands for designing top notch air purifiers in India. It has a long battery life of 3000 hours and excellent 3-stage filtration technology to wipe out hidden-injurious contaminants.

3-layer filtration is a combination of HEPA, HiSiv filter & carbon filters. The HEPA + HiSiv filter helps to deter 99% of PM2.5 compounds and activated carbon filter eliminates gases, dust particles, allergens (>0.3 microns).

Touch panel on purifier offers various functionalities like child lock, fan speed, sleep mode and indicator options. Built-in sleep mode reduces fan speed at night times as there is no timer option to shut down automatically.

The child lock system ensures safety from dangerous contents by using magnetic safety lock. Fan speed is responsible for smooth functioning of the device and indicator will buzz when the light blinks blue for good air and red for bad air.

When you switch on the device, it spreads air to a distance of 360 Sq.mts by utilizing 42 watts of power. It can effectively work for a year if you use purifiers 8 hours in a day.

It is best in classy airflow design to optimize the air suction and to enable the purification efficiency. Children can easily access the purifier without any risk because of anti-fall design and no sharp edges.

The performance of the top Honeywell air purifier is excellent as it comes with smart features to eliminate dust and odor. Also, the manufacturer offers a 1-year warranty and full money refund within 10 days from the date of purchase.

If you want to extend the usage of air purifier over a large area, then it is ideal to choose Honeywell HAC35M1101G Model  as it can purify the air with a coverage distance of 400 Sq.ft and comes at very expensive prices. It best suits for those who are willing to invest more on top air purifiers.

If budget is the thing, then you can have  Honeywell HAC25M1201W Air Purifier. It has a unique 3D airflow design to ensure optimum air circulation and improves the life of HEPA and carbon filter by eliminating large size pollutants in a room. It offers you the pure air within a range of 323Sq.ft and 250m3/hr of CADR rate.

Honeywell Air Purifier- Key Features

  • HEPA & HiSiv filter.
  • Activated carbon filters.
  • 3-stage advanced filtration system.
  • Child lock and sleep mode options.
  • CADR rate is 300m3/hr.

Things we like

  • Washable filters.
  • Quick starter guide.
  • 1-year Warranty card.
  • Consumes Less power.
  • 3000 hours of filter life.

Things we don’t like

  • Expensive air purifier.
  • Low noise production.
  • No app connectivity.
  • Not suitable for humid conditions

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2. Philips 2000 Series Air Purifier (White) Under 20000

Philips 2000 Series is one of the best portable room air purifiers in India in terms of efficiency and performance.

Compared to Honeywell, Philips air purifier spreads clean and fresh air to a maximum coverage area with high CADR rate.

The device is made with Vitashield IPS material in an aerodynamic design to prevent from breaking. It has 3 automatic purification settings- general, sensitive allergen mode and powerful bacteria & virus modes to clean air within a range of 440Sq.ft.

CADR rate indicates the volume of purified air per hour which is 333m3/hr a bit higher than previous models. The purifier uses HEPA filtration and Nano protect filter for eliminating the dust particles (< 20 microns), harmful gases like benzene & formaldehyde.

The AeraSense sensor technology identifies PM2.5 particles and processes the information to an indicator for maintaining ideal air conditions in a room. Besides, it allows the users to customize the fan speed in 3 turbo modes-high, medium and low.

For the convenience of users, the manufacturer offers 2-years of warranty on the product. The only thing that we didn’t like is the need to replace filters very frequently. Otherwise, it’s totally worth the money.

If you want to go with the more advanced features (bit expensive too) in the same Philips brand, then this Philips 3000 Series is for you. On a comparison note, both 2000 and 3000 series features are same. But what makes the difference is the coverage distance (818 Sq.ft) which is double the amount of 2000 series and the CAD rate is of 376 cubic meter/ hour.

Philips Air Purifier- Key Features

  • Nano-protect filter.
  • Ozone-free air purifier.
  • AeraSense technology.
  • Grade sensing technology.
  • Air purifier with HEPA filtration.

Things we like

  • 100% ozone-free.
  • 2-years of warranty.
  • Aerodynamic design.
  • Vitashield IPS material.
  • ft of coverage distance.
  • 60 watts of power consumption.

Things we don’t like

  • A bit expensive to buy.
  • Need to change filters regularly.

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3. Mi Air Purifier 2 (White) Under 10000

MI Air Purifier 2 (White)

Next model in the list is MI brand air purifier. It is one of the best air purifiers in India because it has outstanding coverage range and smart controlling options. For this reason, we’ve listed number 3 on the list.

MI air purifier looks simple, elegant and comes in a new compact design that just takes 10 minutes to circulate clean air in a room or big hall. Internally, it is equipped with aerodynamic pressure system to draw air from the base and expel out with a great force.

When you turn on the device, Nitec DC motor utilizes 4.8-31 watts power to perform the cleaning operation within a range of 400 Square feet.

The 3-layer HEPA filter removes harmful toxins and PM2.5 present in the surrounding atmosphere. Additionally, it features real-time AQI monitoring & MI smart app controller to adjust the airflow rate, and switch to on/off modes.

When you purchase this wonderful MI air purifier, you get air purifier with filters, power cord, 1-year warranty card and a user manual.

On the whole, it’s good to use in homes as the Mi air purifier price is comparatively low. The only thing we didn’t like is that it uses only HEPA filter which cannot eliminate the odors in a room. So its preferred to use in areas where there are more dust particles.

MI Air Purifier- Key Features

  • Nitec DC motor.
  • 3-layer HEPA filter.
  • Smart app controller.
  • Real-time AQI monitoring.

Things we like

  • 1-year warranty.
  • Easy installation.
  • Coverage area is 400Sq.ft.
  • Maximum of 31watts power consumption.

Things we don’t like

  • Uses only HEPA filter.
  • Limited usage for bedrooms or living rooms.

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4. Atlanta Air Purifier (White) Under 15000

Atlanta Healthcare Air Purifier

With Atlanta air purifier, you can set air free from harmful toxins, dust, smoke, bad odour and allergens, making it more ideal for homes, offices, hotels, hospitals and other public places.

This product comes along with main unit, remote controller, user manual and a warranty card (1-year).

As single purification system cannot completely eliminate the pollutants, so there is a need of multi-stage technologies. Hence, it uses 7-stage air purification technology- pre-filter, HEPA filter, carbon, anti-bacterial filter, photo catalyst, UV and ionizer.

iCluster technology in Atlanta air-purifier mainly focuses on eliminating pollutants by synchronizing with multi-stage filtration to provide fresh and pure air.

The timer allows the user to set a particular time slot, and night mode reduces the noise produced due to motors and fans.

This air purifier consumes 43 watts of power to purify the air within the range of 350Sq.ft. And the CADR rate is 170m3/hr.

On the whole, Atlanta is the good air purifier that perfectly matches with the basic requirements of a purifier. But, the downside of the product is that its usage is limited to small rooms. Also, body of the purifier is made with poor quality plastic material.

Atlanta Air Purifier- Key Features

  • Odor sensors.
  • H13 grade HEPA filter.
  • iCluster technology.
  • 7-stage air filtration technology.
  • Advanced filtration mechanism.

Things we like

  • Reasonable price.
  • 43 watts of power.
  • 1-yearof warranty.
  • CE certified product.
  • 170m3/hr of CADR rate.
  • Simply plug & play type.
  • Timer & auto-start options.

Things we don’t like

  • Poor quality material.
  • Noise interference.
  • Limited to small rooms.

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5. Sharp Air Purifier (Black) Under 20000

Sharp FP-F40E-T 31-Watt Air Purifier

Number 5 on the list is Sharp air purifier. The reason for listing in the best 10 air purifier is the purifying mechanism it adopts -combination of active & passive purification systems.

What makes the purification system unique from others is the seamless integration of 2 purification systems and is certified by 28 global labs for the effectiveness and safety measurements.

The sharp air-purifier comes with passive HEPA filter that eliminates PM2.5, dust, smoke and other harmful allergens. Pre-filters trap dust particles, and the superior plasma filter kills airborne toxins like H1N1, MRSA, and TB.

It consumes less power of 37 watts that in turn saves the electricity bill. Also, produces noise to a level of 49dB that will make you bit irritative when the purifier is switched on.

Automatic option will let you restart the device when there is a power failure or even shutdowns according to the timer you set.

Depending on the usage and durability of filters, it can last for 2-years. The unit also comes with 1-year of manufacturing warranty.

Overall, the performance of the Sharp air is fantastic. But, the only thing that we didn’t like about the product is the material quality which is not up to the standards.

Air Purifier- Key Features

  • Active plasma clusters.
  • Passive HEPA system.
  • Pre-filters and Ionizers.

Things we like

  • 1-year warranty.
  • High CADR rate.
  • Certified by 28 global labs.
  • 37 watts of power consumption.

Things we don’t like

  • Expensive air purifier.
  • High noise level.

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6. Gliese Magic Air Purifier (Classic White)

Gliese Magic - 24 Watt Room Air Purifier

Next one in the list is Gliese Magic Air Purifier that is available in the market right now at reasonable prices.

Gliese Magic air purifier is equipped with 360 mechanisms, and 5-stage air purification technology- pre-filter, HEPA filter, carbon, UV filter and Ionizer.

Pre-filters, filter out the large airborne impurities. Carbon filter uses a bed of activated carbons and then processes to remove odors and gases that may cause eye, throat irritation and headache.

HEPA filter traps and removes all kinds of bacteria, viruses, benzene, formaldehyde, and dust particles. Whereas UV & Ionizer filter emits negatively charged ions to neutralizes positive ions emitting from other sources.

It uses 360◦ ultra-efficient filtration technology to trap dust particles in all directions at a CADR rate of 140m3/hr that is much suitable for rooms up to 200Sq.ft.

The digital touch panel comes with filter life meter and 4-color air quality indicator to easily identify the pollution level (Red-bad, Purple-polluted, Amber-Moderate, Blue-good). Auto-mode will adjust the fan speed automatically as per room air-quality conditions.

Gliese Magic offers 1-year warranty along with the package that- air purifier, filters and a manual.

As ionizer filter releases ozone, it is strictly not recommended to use if you are prone to asthma or allergic reactions. You can switch the room ionizer air purifier to on/off using Vita-ion button depending on your convenience.

Overall, Gliese Magic air purifier is fully packed with a good number of features like impressive coverage area, filters and functions accurately. However, there are some minor factors like cheap build quality, excess noise production and low sensor performance that will let you think twice.

Gliese Magic Air Purifier- Key Features

  • UV and Ionizer filter.
  • 5-stage purification technology.
  • Advanced Pre-filter, HEPA, Carbon filter.
  • CADR rate is 140m3/hr.

Things we like

  • Very light weighted.
  • Highly portable.
  • 360◦ air purification.

Things we don’t like

  • Noisy air purifier.
  • Made with a cheap plastic material.
  • Inconsistent air quality sensors.

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7. Ooze H30 Indoor Air Purifier Under 8000

Ooze H3O Ve1 7-Stage Purification

Enjoy the freshness and pure air in your room using Ooze air purifier. It is specially designed in black and white color combinations to match the coloring options of all age-group people.

When you compare with the budget air purifiers in India, Ooze undergoes purification process in 7-different stages to offer clean and odorless air within a range of 370 Sq.ft.

Another important feature is that it has a built-in quality sensor to test the air quality by sensing the surrounding atmosphere.

As the Nano-cold catalyst filter is highly efficient in removing the bacteria, dust, and pollen on the floor, & side-walls, it can be used for a long time due to the washable option it has.

The honeycomb coconut shell carbon filter is used to increase the efficiency of air by filtering the small-volume pores to a great extent. On an average, 1 gram of activated carbons spread up to 500 Sq.ft.

Anti-bacterial and antivirus fabric filters help to remove the odors, oil vapor, and hydrocarbons present in the air.

Overall, the performance of the Ooze air purifier is quite acceptable and also comes with a 1-year warranty for the convenience of users. But the major cons of this product are that it is limited to small-sized rooms and made with the poor quality materials. Apart from this, it’s totally a good one.

If you are the one who can afford more on-air purifies, then H30 Series Air Purifier is for you. Though its functionality is similar to the others, comes with humanized design, 3-level fan speed, and automatic modes to ensure the hassle-free functioning.

There is a timer setting option where it automatically switches off the purifier when set for hours.

Ooze Air Purifier- Key Features

  • Anion generator.
  • UV sterilizer light.
  • True HEPA filter.
  • Nano cold catalyst filter.
  • Intelligent odor sensor system.
  • Non-woven fabric filter & carbon filter.

Things we like

  • Moderate priced.
  • Portable nature.
  • 1-year warranty.
  • 370 Sq. ft of a coverage area.
  • 40 watts of power consumption.

Things we don’t like

  • Doesn’t support an app.
  • Poor quality materials.
  • Only for small rooms.

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8. American Micronic Air Purifier  Under 4000

AMERICAN MICRONIC 22 Watts Air Purifier

American Micronics air purifier is perfect for bedrooms, halls and medium-sized cabins within a square foot of 150-200. This wonderful device is equipped with multi-filtration technology that contains HEPA filter, carbon filter, and ionizer compared to other models on the list.

The HEPA filter present in this air purifier removes the 99% of airborne particles up to PM 2.5 and the activated carbon filter completely removes oil vapors and odors.

By switching Ionizer to on/off modes, it doesn’t emit the toxic gases like ozone (dangerous at high concentrations) in your room.

The sleep mode option will adjust the fan speed and noise to low to have peaceful sleep without any disruptions. There is a manual setting for timers in 1-2-4-8-hour format and 3-speed airflow modes-low, medium, and high.

Built-in air Ionizer completely removes the particles by creating static charge around the contaminants in the air. Once the particles are charged, they stick to the nearest surface. However, you can switch off the ionizer when don’t want to use it.

It sounds good to know that the product manufacturer offers a 1-year warranty on the product and free extended warranty for the 2nd year. It has got GS- Geprufte Sicherheit Certificate for the safety standards it maintains.

Compared to others, the size of the device is too small. Hence it can only purify the air within the range of 200Sq.ft. There is no remote control option for this product as you need to set the operations manually. Apart from these 2 cons, it’s totally a good air purifier in India to buy for those who can afford a very little amount.

American Micronic Air Purifier- Key Features

  • On/off Ionizer.
  • Activated carbon filter.
  • CADR rate is 270 cubic meter/ hour.
  • 1-2-4-8 hour and 3-speed airflow.

Things we like

  • Low-priced.
  • Sleep mode options.
  • GS certified for safety standards.
  • Free extended warranty for 2nd

Things we don’t like

  • No remote controller option.
  • Limited coverage area.

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9. AIRSPA TMS 16 HEPA Air Purifier Under 12000

Airspa is a newly established company that is aimed to provide clean and fresh air at indoors. So they have come with the wonderful source like by designing HEPA air purifiers that are very easy to install, durable and reliable.

During the process of filtration, it generates a very low noise of 18dB which is too good for an ideal air purifier. Whereas the other models on the list produce a lot of noise (above 30dB).

It has 6-stage filtration system with all the necessary tools like HEPA filter, carbon, anti-microbial, UV & ionizer filters, to keep the indoor air pure. The functionality of 6 filters is same as the above-mentioned, that helps in purifying the air.

When you switch on the device, it can clean the air with a coverage area of 350 Sq.ft by utilizing 40 watts of power.

CADR rate of Airspa air purifier 180 cubic meter/hour which is very very less. There is also an odor sensor that can be fixed to the device optionally to keep you protected from bad odor.

Now, to make the device work effectively, it should be placed on a flat surface in such a way that both the inlet and outlet isn’t blocked. Remote controller and the panel buttons help to monitor the purifier smartly thereby making the purifier more reliable to the indoor environments.

The overall performance of the Airspa purifier is good as it comes with 6-stage filtration system and smart controlling options. Though it produces very little noise, and not suitable for people with asthma as it contains negative ionizer.

Air Purifier- Key Features

  • HEPA filter.
  • Anti-microbial filter.
  • Activated carbon filter.
  • UV & negative ionizer.
  • 6-stage filtration system.
  • Pre-filter & Nano cold catalyst.
  • CADR rate is 180 cubic meter/hour.

Things we like

  • Odor sensor.
  • Highly reliable.
  • Easy to install.
  • 1-year warranty.
  • 40 Watts of power consumption.
  • Produces very low noise of 18dB.

 Things we don’t like

  • Low CADR rate.
  • Not suitable for asthma patients

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10. Avizo Air Purifier Under 18000

AviZo A1606 Air Purifier

Last but one in the list is from Avizo brand. It is a newly established company that offers a wide range of air purifiers by maintaining high standards.

This Avizo air purifier can purify the air within the range of 410Sq.ft that no one on the list can cover that much distance.

Also, it has a powerful CADR rate of 277 cubic meter/hour to sanitize the air very quickly by covering the distance of 300Sq.ft in just 15 minutes.

The sensors present in the device helps to sense the harmful toxins and PM2.5 present in the air.

Furthermore, it features AQI- Air Quality Index and filter change alert on the digital display unit. Also, it comes with the timer, auto mode, night mode, touchscreen and the remote controller provided with high-quality ABS material.

You can simply set the timer and relax for a while to inhale the fresh air. With the availability of Auto mode, you can choose the speed depending on the contamination level in a room.

There is a smart remote controller to navigate the purifier with an ease and the protection alert mechanism will let you know about the time to change any of the filters.

When you talk about the performance of Avizo air purifier, it is absolutely fine. Though it has amazing features to purify the air, it comes at very expensive prices and also there are no UV & Ionizer filters that are responsible for eliminating the pollutants in the air.

Air Purifier- Key Features

  • True HEPA filter.
  • Digital sensor module.
  • 3-stage filtration mechanism.
  • Pre-filter & Activated carbon filter.
  • Powerful CADR of 277 cubic meter/hour.

Things we like

  • Portable nature.
  • Timer and auto modes.
  • High-quality ABS material.
  • Smart remote control options.

Things we don’t like

  • High-priced.
  • No UV & Ionizer filters.

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Things to Consider While Purchasing an Air Purifier

To choose an air purifier, you need to consider several factors like room size, power consumption, noise levels and finally the cost. We have tested on many and checked the performance by switching to low-high speed variations.

Given below are the factors responsible for the better performance of air purifier. Check them in detail.

1. Types of filters used in air purifiers

Different air purifiers types target different pollutants, so it is important to identify the pollutants that you want to eliminate from the room and enjoy the fresh air. For your convenience, we have provided different types of filters used in purifiers. Let’s have a glance at the Top 5 air filters for home that are very popular now. (2)

(a) HEPA filter(3)

HEPA is the acronym of High-efficiency particulate air. This HEPA filter has major application in homes, offices, automobiles, air crafts, and hospitals to remove impurities present in the air.

It satisfies the standards set by the DOE- Department of Energy. To qualify, it should filter out 99.7% of PM 2.5 particles.

The best HEPA air filter in India is typically made with fiberglass material and the pollutants, particles can easily pass through it and the working can be explained using 3 mechanisms namely- interception, impaction, and diffusion.

Large contaminants get trapped when they pass through the fiber layer via interception mechanism. Medium-sized particles move through the filter via impaction and diffusion mechanism for small pollutants. All of them bump into the fiber layer and set-up on it.


  • Improves health.
  • Best cheap air filter.
  • Removes 99% of PM 2.5.
  • Produces fresh and clean air at indoors.
  • Can be used as high-efficiency furnace filters.


  • Cannot handle smoke and odors.
  • Incapable of trapping small particles.
  • Microbes stick to HEPA filter can reproduce, resulting in more number.

(b) Activated carbon filter

Activated carbon or charcoal is processed to have a small volume of pores that helps to increase the surface area available for any sort of chemical reactions. 1 gram of activated carbon contains 3000Sq.m of surface area.

The properties of activated carbon like high chemical bonding and absorbent ability will make the device more efficient for capturing harmful pollutants like gases, smoke, and odors. Once the carbon filter traps all the particles, they cannot release back into the air thereby eliminating particles completely.

For those, who are willing to have high-end air purifiers in Delhi that completely deter the odor, smoke, and VOC (volatile organic compounds) then it’s preferred to use an activated carbon filter.


  • Most absorbent filter.
  • Robust design.
  • Easy to maintain.
  • Best budget air purifier filter.
  • Filters fumes, smoke, gases and odors.
  • Will not release pollutants back into the atmosphere.


  • Shorter lifespan.
  • Not effective against bacteria and viruses.

(c) UV technology

Implementing UV technology in air purifiers is an excellent method to kill harmful bacteria, and viruses.

When you install it in purifiers, the microorganisms passed through the UV rays are no longer existed.  Its primary function is to kill only the bacteria, viruses, yeasts, and molds. But cannot handle the dust, smoke or allergens in the air. To attain greater performance, it is associated with other filters where it cannot do specific operations.

When you purchase the UV air purifier, make sure the system does not produce ozone (high-concentration).


  • Easy to clean and install.
  • Best air filter for home.
  • Reduces unpleasant odors in a kitchen.
  • Focuses on eliminating microscopic elements.


  • Expensive filter.
  • Do not kill the harmful particles present in the air.

(d) Negative Ion

Negative ion is a system that uses high voltage to ionize or charge the air molecules. It is a high-end air purification process that is fabricated around ion generators.

The working operation of the device is such that it drives the stream of negative ions that attract dust particles and allergens in the air. As the majority of atoms are positively charged, they are attracted to the surfaces, walls and floors.

Some of the particles are being trapped by ionizers containing a metal plate and they need to be washed very frequently to perform the tasks effectively.

The major advantage of using ionizer filter is that it removes ultra-fine particles up to 1 micron without using fans or motors.


  • Helps to promote deep sleep.
  • Very inexpensive filter.
  • No use of fans or motors.
  • Removes the elements up to 0.01 microns.


  • Doesn’t remove odors.
  • Harmful to asthma patients.
  • Releases ozone into the air.

(e) Ozone

Ozone filters are designed to protect from all kinds of toxins in the air unless the concentrations are higher than the people health standards. Its functionality is similar to the ionizer, but it alters the oxygen molecules and turns to ozone. It is very good at deodorizing and disinfecting the air.

As there are many popular brand ozone purifiers, all of them vary in the production of ozone.  Ozone cannot purify the air and is considered as the toxic gas due to the unstable molecules which are responsible for causing breath-related problems.

If you are an asthma patient or prone to breathing issues, then strictly avoid using ozone purifiers at home. For such people, it is recommended to use HEPA filters or Ozone-free air purifiers in India.


  • Eliminates toxins at high concentration levels.


  • Do not remove particulates.
  • Ozone is unstable and potentially a toxic gas.

To increase the lifespan of any air purifier, you need to change the filter very frequently say- once in every 2-3 months. It, in turn, protects you from inhaling poisonous gases and keeps you healthy all the time.

2. CADR- Higher the CADR better the Air Purifier

CADR abbreviated as Clean Air Delivery Rate. It is actually a performance indicator to determine the efficiency of an air purifier. Most people often get confused with the terminologies like airflow rate, filters, and CADR air purifiers. Here is what exactly the CADR rate is all about.

What is CADR?

CADR rate defines the maximum amount of clean air offered by an air purifier. In other words, it can be expressed as how well the purifier can reduce the allergens, pollutants, and chemicals in a room. Higher the contaminants, faster it purifies the air.

The tests of CADR are being carried out by AHAM-Association of Home Appliances Manufacturers to analyze the performance of a purifier with respect to dust, pollen, and tobacco. Initially, the purifier is kept in a small/medium sized room and CADR rate, the percentage of impurities are determined in just a time gap of 10-20 minutes.

 Given below table completely explains the CADR ratings of different impurities present in a room.

Impurities CADR Rating (Microns)
Pollen5 – 11
Dust0.5 – 3
Tobacco smoke0.10 – 1

To be more specific, higher CADR air purifier filters very quickly than the lower ones. In case, if both the purifiers have the same CADR-rating then purifying performance will be the same.

ACR- Air Change Rate

Air change rate is a key factor for controlling indoor air-pollutants. It is defined as the volume of fresh air needed in a room by measuring the number of persons and size irrespective of indoor airborne chemicals.

Higher the ACR, the higher air flow and energy consumption and vice-versa. It is recommended to have purifier with 250-700 ACR which is too good in a bedroom to breathe fresh air.

To calculate the room air changes, measure the airflow in a room and multiply with 60 minutes per hour. And then divide with the volume of the room in cubic feet.

ACH =   60*Quantity/Volume

For example, if the volume of the room is 1000 cubic-meter and 4 is the no. of times the air changes per hour. Then the resulting air flow rate is 4000 (4*1000=4000) and the air shift per minutes is  60/4 = 15-mins.

3. Size of the Room

You must be familiar with the room size if you wish to have air purifier. The best way to go with is by measuring the room size in square feet.

There are many air purifiers available in the market ranging from compact size to big. Of the available, which air purifier is the best? Obviously, you must opt for the one that is capable of cleansing the air in large space than the actual size of a room.

Here, the given below table explains the CADR rating with respect to the size of a room that helps to choose a specific purifier.

Rooms (in square feet)CADR
Bedrooms  (300 Sq.ft)140
Living rooms (400 Sq.ft)250
For entire house400

 4. Power Consumption

Most of the air purifiers consume a lot of power as they utilize fans and motors to blow air strongly through the filters. On a scale, they consume 30-250 watts of power depending on the size and models.

So choose one that is able to purify the air and also consumes very less power. Of the 10 listed, we have given the power consumed by each product in detail. Check it out.

5. Noise Levels

The purifiers come with 3 or 4 fan settings. The fan usually runs with the help of motors to pull the air inside and then start cleaning operation. When you run the fan for a long time (say 8-12hours continuously) in high mode then there are more chances of producing a lot of noise than low or medium settings.

If you are going to buy an air purifier for indoors, then you have to check for the noise produced in each and every air purifier brand as it makes you feel bit irritative and also spoils your mood.

6. Pollution-free

Some purifiers may pollute the air by spreading ozone, which is highly dangerous for asthma patients, children and elders. Therefore, it is better to avoid such ozone releasing air purifiers.

The best alternative is to look for purifiers that are CARB (California Air Resource Board) certified which is a most stringent testing agency for the consumer products.(4)

7. Manufacturers Reputation and Warranty

Manufacturers reputation is how you get to know about the item. Many of the popular or best air purifier brands in India are appreciated in the industry for various reasons like quality and performance it mainly focuses on.

As air purifier is a long-term investment and you don’t want to replace it with a new one when it becomes faulty. Just like other electronic devices or gadgets, the air purifier is offered with a warranty card. It is highly recommended to look for the manufacturer’s warranty as it helps to avoid the potential damages or the maintenance costs.

Also, read the terms and conditions offered by the maker as it entirely covers motors, fan, filters and other parts.

8. Cost of an Air Purifier

The cost is the main factor to be considered before buying an air purifier. It gives a clear idea of what and how effectively you are going to use the purifier.

If you are on a very tight budget, and still wish to have the best home air purifier in India, then go with the basic models like American Micronics Air Purifier that comes at very low prices. Though it may not offer all the smart features, its main function is to remove the harmful chemicals in the air that causes great damage to the human health.

The above-mentioned basic model may not solve all the purifying issues. So there is an urge of air purifiers that comes with the advanced features like smart navigation, and timer settings. Here in this article, we have mentioned some of the top-class purifiers like Philips, Atlanta, Avizo and Sharp models that best matches the consumer requirements.

9. Some Amazing features of Air Purifier

Most of the purifiers use Fan to capture air for performing a filtration process. Purifiers with fans run more effectively with little noise whereas the ones without fans work poorly.

Programmable Timer is a counter that generates signals when it finishes the count. It allows the users to set purifiers work for hours and then turn off automatically.

Remote controller option will let you adjust the purifying settings in a room.

Dirt sensor helps to detect the dust particles present in the air automatically. In some models, it automatically adjusts the fan speed to level dirt in the air.

Washable pre-filters collect a large number of dust particles and can be washable after usage. It will help you to cut down the overall or maintenance costs. However, the basic models don’t feature this option.

The Carrying handle makes easy for the users to move the purifier from one location to another. Not all the manufacturer offers this extra feature which also makes the device look unique.

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Different types of pollutants

According to the reports given by the WHO-World Health Organisation(5), says that pollutants released at indoors are more likely to attack the people’s health by 10 times than outdoors.

Indoor air pollution is due to the 4 major factors like combustion, building materials, bioaerosols and the ground under the building. Besides these factors, there are major contaminants that not only spoils the indoor environments but also the person’s health is given below.

An Airborne particle is a particulate matter that contains pet dander, spores, dust allergens, pollen, fungi, bacteria, and viruses. All of these are responsible for causing severe health problems like allergies, asthma and other breathing problems.

Tobacco smoke is the practice of smoking tobacco and inhaling the smoke. It is the traditional air pollutant and is the major cause of cancer.

Household odors include harmful gases, toxins and pollutants like aerosols, pesticides, and aerosols. It is very common in every house and is seen in more quantities. Activated carbon filter is the best choice for absorbing the gases and odors than being trapped by HEPA filter.

VOC- Volatile Organic Compounds are the chemicals that have a high vapour pressure at room temperature. These sort of compounds are mostly seen in domestic products like paints, disinfectants, glues, adhesives and cleaning supplies.

They spread micro-organisms like bacteria, viruses, mold, and pathogens that are responsible for causing eye irritation, headaches, nausea and may even damage the nervous system.

A table given below illustrates the type of impurity and average particle size which is expressed in microns.  A micron is stated as (1/25000)   of an inch. As the harmful toxins are expressed in microns, here is a list.

Impurity Type Microns
Oxygen0.0005 microns
E missions from car1-150
Pet allergens0.3-100

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Tips to Handle purifiers

Choosing the right air purifier doesn’t matter. What matters the most is the purifier that you purchased should be used properly. To make the device worth it, here are some of the useful tips so that you can set up, install and use proficiently.

  • Initially, choose the best air cleaner for home use to fix in the right location.
  • Before you mount it on walls or wooden blocks, make sure the clean airflow is directed in the right direction.
  • For better performance of the purifier, keep windows and doors locked.
  • It is also important to change the filters regularly.
  • Now-a-days, washable filters are available in the market, so you can directly replace regular ones with them.
  • Avoid placing the purifiers in extreme hot or cold room climatic conditions as the extreme conditions can block the airflow.
  • If you are a pet lover and have them in your home, then stop pets entering the room to lessen the allergens.

If you follow the above-mentioned tips, then you have fewer chances of affecting to diseases or other health risks.

Types of Air Purifiers

With an increase in the number of houses, purifiers are becoming more self-sufficient and make indoor reach fresh and clean air by deterring dust particles, molds and allergens. Given below are some of the possible air purifiers that are helpful in solving different issues.

Portable air purifiers

Portable air purifiers are often called as room air purifiers. If you don’t have heating or cooling system in a house, then this is for you. It is the best bedroom air purifier as they come at very low-prices and also performs the tasks accurately (without any delay).

They are light weighted and comes with a stylish design. As it is equipped with HEPA filter, there are more chances of removing 99.7% of particles that are less than 0.3 microns.

Whole-house air purifiers

Another option to go with is the whole-house air purifiers. It is attached to heating or cooling systems that can be connected via electrical system. They can even clean the big-sized rooms and is a great option for those with allergy-related health problems.

Commercial air purifiers

They are capable of handling a large number of contaminants when compared to the standard air purifiers. When you prefer to use commercially, you must be aware of different sources of pollution in a room or big halls.

These systems are equipped with PCO-photocatalytic oxidation plus HEPA filter, to offer protection against the harmful bacteria, viruses, chemicals, and VOCs.

Pet air purifiers

As per AAFA-Asthma Allergens Foundation of America, people who suffer from 30% of allergens are more likely to affect with the pet’s dander, skin, and fluids.

Symptoms of pet allergies include itching, nausea, asthma, and rashes. They last for several months and is unpredictable.

The only solution to this problem is by using pet air purifiers that help to get rid of dried saliva, hair, and dander of pets.

To deter pet allergies and odours, it has come with HEPA filters, Ionizers, and UV technology. They are very cheap and disposable too. The allergy physicians also suggest you to use only 4 hours a day to completely eliminate the pets thing.

Smoke air purifiers

Tobacco smoke is hazardous to health as it contains chemicals and smoke particles. Smoke particle size could be of 0.01-1 micron that helps for penetrating into small areas and also cause discoloration to the room surfaces.

When you are exposed to tobacco smoke, it results in long-term health problems like lung diseases, and cancer as it contains around 4000 chemicals like formaldehyde, carcinogenic, benzene, vinyl chloride, ammonia, and arsenic.

Most of the people think that purifiers are ineffective in cleaning tobacco smoke. But it’s totally a misconception.

Now our aim is to neutralize the smoke odors in a room. To make it happen, use purifiers with carbon filters. They are often named as miracle filters because they have the ability to remove chemicals, VOCs, and odours.

This is an exceptional choice for those who smoke daily in their rooms or at bars & restaurants as it completely eliminates the hazardous smoke and allows you to breathe clean and fresh air.

Electrostatic precipitator

An electrostatic precipitator is a device used to filter out the particles like dust and smoke. They are actually designed to recover the valuable industrial materials that are used for pollution control at industries and power generating stations.

Its functionality is similar to the Ion and ozone generators. Yet, the particle is collected on a metal plate and can be cleaned for further usage.

The major con of this device is that it produces ozone which results in chronic respiratory problems.

Best Air Purifier Brands Comparision:

As we know that air purifier is useful in deterring the toxins present in the indoor air. We mostly prefer to buy the popular brand air purifiers in India like Honeywell, Philips, Atlanta, Avizo, Ooze, Sharp purifiers etc.
Of all, Honeywell and Philips air purifiers rank top due to amazing features that help to improve the indoor air quality. But still, it’s tough to decide the best among both purifiers as they offer equal performance in cleaning the bad air.

The Honeywell air purifier has washable filters along with smart features like child lock, fan speed, sleep mode, indicators to completely eliminate the PM 2.5, dust particles and allergens. Whereas Philips air purifier is a budget-friendly device that uses Nano-protect filters+ sensing technology, to first sense the contaminants present in the room and then starts purifying the air.

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Some Frequently Asked Questions About Air Purifiers

1. Is Air Purifier Bad For Health?

Not all air purifiers are good enough for your health. Some air cleaning purifiers that produce ozone gas can be harmful to people who have asthma or other respiratory problems. The ozone gases produced by air purifiers can cause respiratory tract irritation and breathing difficulty.

2. Do Air Purifiers Dehumidify?

Nope. Air purifiers don’t dehumidify the air present in the room. An air purifier circulates air through a filter which traps the impurities and pollutants. A humidifier sucks in the moisture and reduces the humidity levels in the air and kills the mold that thrives in moisture.

3. Do Air Purifiers Help You Sleep?

Apart from just allergen removal, air purifiers can help you sleep in several ways. Air purifiers can remove dust particles and other impurities that cause congestion which leads to improper sleep. Its soothing sound drowns out the outside noises that wake you up.

4. Do Air Purifiers Work For Allergies?

If you are allergies, air purifiers can be helpful in improving your condition. But it doesn’t mean that they can completely cure the allergy. It removes the dust, pollen and other allergens from the circulating air in the room which helps to breathe fresh air. But it doesn’t remove the allergens that are residing on the furniture or mattress.

5. Do Air Purifiers Cool The Room?

By design and functionality, air purifiers don’t produce cool air. Usually, it feels a little cool because of the fan pushing it. Air purifiers don’t have a cooling unit inside them like air conditioners.

6. Do Air Purifiers Help With Mold?

Usually, mold spore ranges from 1 to 5 microns in size. The HEPA filters are proven to be effective in removing airborne mold spores. So, air purifiers effectively eliminate mold. Ensure that your air purifier contains a HEPA filter by looking on the package.

7. Do Air Purifiers Help With Smell?

Some air purifiers like Gliese Magic Room Air Purifier in India have activated carbon filter which helps to remove odor and certain gases that are not pleasant to health.

8. Do I really need a top-class air purifier?

If your home is filled with the harmful pollutants like bacteria, viruses, molds, and dust then there are more chances of affecting severe health problems like asthma or other respiratory diseases.

So the only solution is to make use of air purifiers that not only reduces the hospital bills but also cleans the air by triggering harmful contaminants.

9. What should you consider while choosing an air purifier?

The basic thing you need to look for an air purifier is the type of impurities it can remove. As purification system is the key factor to operate, you must also consider room size, maintenance costs, and replacement filters.

Furthermore, you must also look for warranty, money back scheme, size, design style and color options. As per your needs, you can opt for the one that you would like to have a home purifier.

10. Is it necessary to consider ozone factor when I select air purifier?

Like others, ozone has both positive and negative impacts. At high concentrations levels, they are very dangerous as it will completely affect the breathing process. But at low levels, they are very useful as it cleans the air by eliminating germs.

As per the expert’s analysis, it is not recommended to go with the ozone filters due to the major side-effects it possesses.

11. How long can an air purifier cover?

Usually, purifiers are designed to fit in small, medium and large spaced rooms or halls. It is mainly categorized based on CADR and ACH rates. Both of them have a crucial role in designing the purifier and accounts to the stability and performance of the device.

When you switch On the purifier, it can cover a distance of 150-400 Sq.ft depending on the filter type and model. If you purchase the latest model purifier, you can make your house clean and tidy as it features high airflow rate.

12. How long does it take to purify air in a room?

On an average, the modern purifiers can completely purify the air in just 4-8 hours. For better outcomes, it should continuously be used throughout the day and night. You might be afraid of current-unit charges and the horrible noise.

To help you out, most air purifiers come with multiple cleaning modes like auto, timer, sleep, clean and also consumes very less power for maintaining indoor air quality, even when you are away from home.

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Few Words before Wrapping Up

Air purifiers have become essential in every house and are good to have them as it helps to purify indoor air. It is advised not to purchase the fraud items. If you have trouble in choosing, then go through the air purifier buying guide to pick one that best satisfies your needs & deeds.

As per the expert’s suggestion, it is highly recommended to use Honeywell Air Purifier-Classic White because of remarkable features like child lock, fan speed, sleep mode, indicator option, and filters. It purifies the air within 360 Sq.ft by consuming less power (42 watts).

Also, it has a lifespan of 3000 hours. So you can use it throughout the day to stay strong and healthy.

Most people tend to buy this product for its unique nature in cleaning the air. Grab it as early as possible to experience the fresh air as it perfect air purifier in India for home.

If you have queries or used any of the above-listed products, please do share with us in the comment section given below. We are very happy to clarify doubts.

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