Best Air Purifier for Home Use in India 2018

Best Indoor Air Purifier IndiaIt seems installing the Best Air Purifier in India is now a necessity since our environment is completely polluted.

Do you know that the house you’re living in is 10x more polluted than the outside air!

Air Pollution in cities like Delhi has touched its peak and in fact Delhi is the most polluted city in the world. Even most other popular metro cities like Mumbai, Pune, Bangalore, Hyderabad etc… are seeing a huge rise in the air and water pollution.

Installing a best rated air purifier is the perfect and only viable solution to reduce the risk of respiratory diseases such as Asthma, Lung Cancer and Chronic Obstructive Pulmonary Disorder (COPD).

What an air purifier does is it removes the ultra-fine particles, dust, pollen, allergens, harmful gases, viruses and bacteria from the air present inside your house by using advanced filtration technologies like Pre-Filter, Activated Carbon, UV-C Lamp and HEPA filter.

A best rated air purifier, within a span of 1 to 2 hours, can improve the air quality inside your house from a hazardous (300m3) to a good (60-100m3). You can read the buying guide (at the bottom) to have a clear understanding about the things to know before picking an air purifier for home.

There are variety of air cleaners in India starting from a mere 2000 INR to 1 lakh rupees, depending on the requirements.

Top 10 Best Air Purifier in India 2018

Here are the most popular air purifiers you can buy in India right now:

Air Purifier for HomeCADRFiltersCovered AreaEditor's Rating
Honeywell Air Touch HAC35M1101G300 m3/hPre-filter, patented HiSiv fitter and HEPA450 sq.ft
Philips 2000 Series AeraSense AC2887333 m3/hPure HEPA filter851 sq.ft
Philips 2000 Series AC2882333 m3/hPrefilter, Activated Carbon and HEPA filter851 sq.ft
Philips AC4012/10 36-watt Tulip160 m3/hHEPA filter, activated carbon filter and pre-filter323 sq.ft
Atlanta Healthcare 7-Stage Purification225 m3/hprefilter, HEPA filter, activated carbon, anti-bacterial filter, UV light, photo catalyst oxidization and ionizer400 sq.ft
Panasonic F-PXF35MKU(D) 20-watt160 m3/hSuper Nano-Technology Deodorising filter and HEPA Composite Air filter283 sq.ft
Eureka Forbes Aeroguard Mist 56-watt205 m3/hprefilter, HEPA filter, Carbon filter, silver coated carbon filter, active oxidation filter and anion generator250 sq.ft
Honeywell Lite HAC20M1000W210 m3/hprefilter, activated carbon and HEPA filter250 sq ft
Philips 1000 Series AC1215/20270 m3/hrHEPA and Carbon filter677 sq. ft
Mi Air Purifier 2310 m3/hrEPA triple layer filter400 sq.ft
Gliese Magic Room Air Purifier140 m3/hrTrue HEPA and activated carbon filters200 sq.ft
Kent Aura 45-watt180 m3/hProven HEPA technology and carbon filter270 sq.ft
Atlanta Healthcare Alfa 351110 m3/hHEPA filter, activated carbon and cold catalyst filters350 sq.ft

We’ve also ensured that these purifiers do come with the important features like HEPA, Replaceable filters, silent mode etc….

Best Air Purifiers in India under 20000

1.Honeywell Air Touch HAC35M1101G Air Purifier
Honeywell Air Purifiers India

Honeywell is a Fortune 100 American company that is specialized in producing both commercial and consumer products. This indoor home air purifier is able to purify the polluted air inside your home with 99% efficiency. The 3-stage advanced patented filtration system naturally removes pollutants and doesn’t emit any harmful gases as a byproduct, which means it is totally ozone free.

The high efficiency HEPA filter removes any allergens (above 0.3 microns) and microscopic pollutants.

The pre-filter is washable and can remove larger dust particles, pet hair/dander and even soil.

CADR of this purifier is 300 m3/h and covers up to 450 sq ft. It is best suitable for use in living rooms and bedrooms.


  • 3-stage Advanced patented filtration system
  • Ozone free air purifier
  • Comes with washable pre-filter, patented HiSiv fitter and HEPA filter
  • CADR: 300 m3/h; Covers up to 450 sq.ft
  • Touch panel controls
  • Low noise of operation (sleep mode)
  • Intelligent auto mode for different pollution levels
  • No exposure to filters from outside – safe for children
  • Low power consumption – 7.5 W to 52 W
  • Approx.. 3000 hours of filter life with easy & diy filter replacement
  • 18 months replacement warranty


  • No memory function; Have to manually switch it back when power goes off and comes.
  • No in-built surge protector

Available on
2.Philips 2000 Series AeraSense AC2887 Air Purifier
Philips Air Cleaner AC2887

Just like the Philips AC3256 air purifier, the AC2887 also comes with AeraSense advanced technology, but at a lower price compared to the earlier one.

It has real-time PM 2.5 measurement and display feature and covers room size of up to 851 sq.ft.

The CADR of this purifier is 333 m3/hour and is 100% ozone free i.e., it doesn’t produce any harmful gases as a by-product of the filtration.

There are dedicated auto modes for pollution, allergen and bacteria/virus protection.


  • AeraSense technology
  • Real-time PM 2.5 measurement and display with professional grade sensors
  • Pure HEPA filter with no side effects
  • Good for people with dust and pollen allergies
  • Ozone free
  • CADR: 333 m3/hour; Covers up to 851 sq.ft
  • Dedicated auto modes
  • 60 W power consumption
  • 2 years warranty on the product


  • Air quantity or air throw decreases in the allergen mode. So, if you’ve pets in your home, then you should check this issue.
  • Can’t handle too much pollution (ex: Delhi), instead get the AC3256 model; But, good for moderately polluted cities.

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3.Philips AC4012/10 36-watt Tulip Air Purifier
Philips Low Voltage Air Purifier AC4012

This is the best air purifier for home in the mid-budget category and is worth the price for the decent features it offers.

VitaShield IPS technology contains 3 filters – HEPA filter, activated carbon filter and pre-filter.

The SmartSensor technology measures and controls the quality of air inside the room. It has dedicated sleep mode feature that reduces the noise levels and also minimizes the power consumption.

The AC4012/10 purifier comes with different times (1/4/8 hour) i.e., you can set the timer and sleep undisturbed without worrying about switching off the air purifier.


  • VitaShield IPS technology – prefilter, activated carbon and HEPA filter
  • 3-step fan speed
  • Auto turn-off timer (1/4/8 hour)
  • Check air-quality level through 3-step light indicator
  • Dedicated sleep mode for silent functioning
  • No ionizer
  • CADR: 160 m3/hour; Covers up to 323 sq.ft
  • 36 W power consumption


  • No humidifier
  • No dedicated allergen/pollution mode

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4.Philips AC4012/10 36-watt Air Purifier
Philips 36 watt air purifier

The Philips AC4012/10 is one of the best Air purifiers in India priced below 15000 INR. It comes with decent features at an affordable price tag.

The main important feature in Philips air purifiers is the VitaShield Intelligent Purification System (IPS), which contains prefilter, activated carbon filter and HEPA filter.

There is also a Smart Sensor that automatically monitors the pollution level in the room and controls the air quality.

For noise free and less energy consumption, you can switch it to the Sleep mode.

You can set the timers for 1/4/8 hour intervals. Healthy air protect alert feature alerts when it is time to change the filters.

The purifier comes with a 2 year warranty.


  • VitaShield Intelligent Purification System with 3 filters
  • 3-step fan speed
  • Sleep mode
  • Healthy air protect alerts
  • 1/4/8 hour timers
  • CADR rate: 160 m3/hr
  • No ionizer
  • Less noise for undisturbed sleep


  • No humidifier
  • No real-time PM2.5 display

Available on
In the premium category, these are the best HEPA air purifiers available in India. Each of these air cleaners come with both pros and cons. You should pick the one that suits your requirement and budget.

Best Air Purifiers under 15000 in India

5.Philips 2000 Series AC2882 Air Purifier
Philips AC2882 Air Purifier

If you’re looking for an affordable air purifier below 15000 rupees, then the Philips AC2882 is definitely the one for you.

It comes with VitaShield IPS technology for natural air filtration. There are dedicated auto modes for pollution, allergen and bacteria/virus.

It can cover a room size of upto 851 square feet and the CADR is 333 m3/hour. It contains no ionizers and is 100% ozone free

It uses 56 watt power and comes with 4-color air quality indicator lights.


  • VitaShield IPS technology
  • Prefilter, Activated Carbon and HEPA filter
  • No Ionizer
  • CADR: 333 m3/hour
  • Covers 851 sq.ft room
  • 4-color air quality indicator
  • 2 years warranty


  • No PM2.5 display
  • No Remote control

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6.Atlanta Healthcare 7-Stage Purification HEPA Air Purifier
Atlanta healthcare HEPA air purifier

The Atlanta Healthcare Beta 350 is a 43-watt air purifier with 7-stage air purification process that removes dust (PM10, PM2.5), smoke, bad odor, gases, allergens and several other air-borne infectants.

It comes with a prefilter, HEPA filter, activated carbon, anti-bacterial filter, UV light, photo catalyst oxidization and ionizer.

You also have the timer and auto-start feature to set timer and to automatically start the system in case of power failure.

The device gives you a warning as to when to change the filters, so that you don’t have to worry about manually checking them.

It comes with Super Silence Technology so that the noise level is minimized to sub 45 dB.

It comes with a warranty of 1 year on the product.


  • Super Silent Technology
  • 7-Stage Air Purification
  • HEPA Filter, UV Lamp & Pollution Sensor
  • CADR rate: 225 m3/hr
  • Remote Control
  • Easy installation
  • User-friendly Interface
  • Photo Catalyst Oxidization
  • Timer and Auto Start options
  • Very Cost-effective


  • No Humidifier
  • Poor CADR compared to other models

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7.Panasonic F-PXF35MKU(D) 20-watt Air Purifier
Panasonic Air Purifier India

It is one of the top rated air purifiers in India with a budget friendly price tag.

This 20-watt air filtration system comes with 3D circulation airflow and nanoe purification. It covers upto 283 sq.ft area i.e, good for small rooms.

There is an auto mode and sleep mode for reduced noise levels. It has Super Nano-Technology Deodorising filter and Composite Air filter for advanced air purification.

You have the filter replacement indicator, odour sensor and turbo mode.


  • HEPA Composite Filter
  • De-Odourization Filter
  • Sleep Mode (8 hours)
  • Turbo mode
  • Less power consumption
  • Less noise
  • No ionizer


  • No humidifier
  • Little big in size

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8.Honeywell Lite HAC20M1000W Air Purifier
Honeywell Lite Air Purifier

Honeywell, a Fortune 100 company, is one of the best brands that is associated with air purification systems. It comes with unique air flow design that spreads the air to all the corners without losing its efficiency.

It has a touch panel with features like child lock, auto mode, timer, sleep mode and 3-speed fan.

The 3-stage advanced air filtration system is efficient in removing more than 99% of the pollutants, PM2.5, bacteria/viruses, pollen, toxic gases and many more.

The material is made up of ABS body with anti-UV coating for extra durability.

The CADR is 210 m3/hour and the device covers up to 200-250 sq ft. Ideal for bed rooms, study rooms and kitchens.

The noise level ranges from 30 to 49.5 dB. There are prefilter, activated carbon and HEPA filters for advanced air purification.


  • 3-Stage Advanced Filtration
  • Unique air flow design
  • Child lock, auto, timer and sleep modes
  • 3-speed fan mode
  • CADR: 210 m3/hour
  • Ideal for bedrooms, kitchens and study rooms
  • Air quality indicator
  • Filter replacement indicator
  • Low noise


  • No PM2.5 display

Available on
9.Eureka Forbes Aeroguard Mist 56-watt Air Purifier
Eureka Forbes Air Purifier

Eureka Forbes is a well-known Indian company based in Mumbai. It is also a reputed brand that manufactures different consumer electronic products.

The Aeroguard Mist comes with 6-stage advanced air filtration system – prefilter, HEPA filter, Carbon filter, silver coated carbon filter, active oxidation filter and anion generator. It has Super Composition filter with Smart sensor technology and filter change alarm.

There is a 4-stage speed control with breathe safe filter and built-in sleep mode. It consumes 56 watts power.

It is internationally approved by GUI labs for its best air quality.


  • 6-stage Advanced air filtration
  • CADR: 205 m3/hr
  • Covers upto 250 sq.ft area
  • Remote control
  • Smart sensor technology
  • Filter change alarm
  • Air quality indicator
  • Timer
  • Speed Control
  • Less than 35dB noise levels
  • Ozone friendly
  • 1 year warranty
  • Less power consumption
  • Ideal for 1-2 bedroom flats


  • No humidifier

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10.Philips AC4025 40-watt Air Purifier
philips hepa air purifier

This air purifier from Philips comes with advanced filtration system, ABS plastic body and a dedicated sleep mode option.

It has 3-step fan speed along with a timer (1/4/8 hour) to automatically start the purifier after a set period of time.

Its advanced air filtration system efficiently cleans bacteria, allegens and harmful agents in the air and provides with a clean and breathable air.

The healthy air protect alert notifies you when there is a need to replace the filter. There are total 3 filters – prefilter, activated carbon filter and HEPA filter.

The device covers upto 323 sq.ft and comes with 2 year warranty on the product.


  • 3-stage air filtration system
  • CADR: 127 m3/h
  • 3-step fan speed
  • Dedicated sleep mode
  • 1/4/8 hour timer
  • True HEPA
  • Filter change indicator
  • 36db – less noise levels
  • 40 watt power consumption
  • 2 years warranty


  • No automatic restart when the power goes out and comes back.
  • Not for heavily polluted cities like Delhi.

Available on

Best Air Purifier for Home Use in India under 10000

11.Philips 1000 Series AC1215/20 Air Purifier
philips ac1215 air purifier

As we already know, Philips is one of the top brands that manufacture the quality air purifiers in India at the moment. The Philips AC1215/20 purifier is one of the best products in its range.

It comes with VitaShield IPS technology along with auto and allergen modes. There is an ultra-silent nightsense mode that helps you sleep peacefully without any louder sounds.

The purifier can cover room sizes up to 63 m2 and is a perfect companion for use in bedrooms or small offices.

It has a clean air delivery rate of 270 m3/hour and is efficient in removing 99.97% of allergens and ultra-fine particles as tiny as 0.02 microns.


  • VitaShield Intelligent Purification System
  • NightSense auto mode & allergen mode
  • HEPA and Carbon filter
  • Smart air quality sensor with indicator
  • Smart Light control
  • Auto Real-time PM2.5
  • Multiple fan speeds (4)
  • Ultra-silent and quiet mode (33db)
  • Filter replacement alerts
  • Child lock
  • 100% ozone free


  • If you’re living in any of the most polluted cities like Delhi, then this air purifier doesn’t work for its weather. For low-moderate polluted areas, this is perfect and has no issues.
  • No remote

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12.Mi Air Purifier 2
mi air purifier 2nd version

Xiaomi, which is into the mobile phone market, is slowly expanded itself into the home appliances niche and this air purifier is being sold at a reasonable price in India.

The Mi purifier 2 comes with real time AQI monitoring and Mi home app controls i.e., you can control the device from your Smartphone using the app.

It comes with EPA triple layer filter that removes the harmful PM2.5 particles efficiently.

A lot of users have reported that the Mi purifier 2 cleans the air of a 400 sq.ft room in under 10 minutes, which is very fast by the industry standards.

It is quieter than the first version i.e., at just 30dB, you don’t feel that a purifier is sweating out in you room to clean the air.

It consumes 31 watts of power and comes with 1 year warranty, on the product.


  • 360 degree triple layer filter – primary filter, EPA filter and activated carbon filter
  • Mi home app smart control
  • CADR: 310 m3/hour
  • Ultra-silent and power efficient
  • Filter replacement notification alerts
  • Auto-detects PM2.5 concentration and displays it on the phone
  • Low power consumption
  • Weighs just 4.5 kgs


  • No remote; but you’ve the app to control it wirelessly.

Available on
13.Gliese Magic Room Air Purifier with True HEPA
gliese room air purifier

This room air purifier from Gliese comes with a 5 stage air filtration system, which include prefilter, true HEPA, activated carbon filter, UV light and anion generator.

It has got a CADR of 140 m3/hr, which is suitable for small rooms or up to 200 sq.ft.

There is also a digital touch interface with PM2.5 meter, filter life meter, air quality indicator etc…

The purifier can efficiently clear the air from dust, allergies, smoke residue (nicotine), harmful gases, pet dander, bacteria and several viruses.

The round shape of the purifier ensures 360 degree air purification and it also produces very less sound, thus making it good for use while sleeping too.

The product comes with 1 year warranty.


  • 5-stage air filtration system
  • True HEPA and activated carbon filters
  • 360 degree air purification
  • CADR: 140 m3/h
  • Touch panel with PM2.5 meter
  • Air quality indicator
  • Less noise
  • 1 year manufacturer warranty


  • Although the product says it is for a 200 sq.ft room, in real-time environment, it is ideal for use in 130 to 180 sq.ft rooms like small office rooms, bedrooms, smaller gyms etc….So, don’t expect it to work efficiently in larger rooms.

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14.Kent Aura 45-watt Room Air Purifier
kent aura air purifier for bedroom

Kent is one of the well-known brands, especially in the home appliances niche. The aura room air purifier comes with proven HEPA dust collection technology and has an inbuilt ionizer that purifies the air inside the room/house wherever it is placed.

It comes with filter change alarm, intelligent light sensor, carbon filter, child lock and is also very easy to operate.

The device produces less noise and is ideal for use while sleeping. There is also the 8 hour timer feature with auto off function.

The purification happens in 4 stages and can cover a room size of 270


  • 4-stage air purification system
  • Proven HEPA technology and carbon filter
  • CADR: 180 m3/h
  • Less noise
  • Child lock
  • Filter change alarm
  • Inbuilt ionizer
  • Less power consumption
  • 8 hour timer with auto off feature


  • A little pricier compared to other brands with similar features.

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15.Atlanta Healthcare Alfa 351 5-stage HEPA Air Purifier
atlanta healthcare air filter

The Alfa 351 from Atlanta Healthcare comes with advanced 5 stage air purification technology.

It include prefilter, HEPA, activated carbon, cold catalyst fiters, which removes harmful particles in the house and improve the air quality.

The maximum it can cover is up to 350 sq.ft area and is ideal for bedrooms, small halls and small offices. It has a CADR of 110 m3/h and has super silence technology (35 to 45 dB)

There are 3 fan modes. LED display, auto start in case of power cutoff, remote control and multi-mode operations.

The product comes with 1 year warranty.


  • Advanced 5-stage air purification
  • HEPA filter, activated carbon and cold catalyst filters
  • 3 fan speeds
  • 1-12 hour timer
  • CADR: 110 m3/h
  • Very less noise
  • Auto restart in case of power failure
  • Remote control
  • 40 watts power consumption


  • No UV lamp

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16.Moonbow AP-A8400UIN Portable Room Air Purifier
moonbow air purifier

This portable air purifier for small office/bedroom from Moonbow comes with 5-stage air filtration technology that cleans up to 99.985% of pollutants present in the air.

The different filters include prefilter, HEPA, activated carbon, UV and Ionizer. The purifier can cover up to an area of 400 sq.ft and consumes 55w of energy.

There is also the filter change indicator, timer control and auto shut off feature.

It weighs just 4.2 kg and comes with an year of warranty.


  • 5-stage air purification system
  • True HEPA, carbon, UV and Ionizer
  • CADR: 210 m3/h
  • 3 fan speed settings
  • Ideal for small to medium sized offices and bedrooms
  • Filter replacement indicator
  • Less noise
  • Low power consumption


  • If you’re living in a remote location (villages), then the after sales support is not that good. The product is good but you’ll need to make frequent attempts to the sales team if in case any problem appears.

Available on

Best Budget Air Purifier in India below 5000

17.Kent Ozone Room Air Purifier
kent portable air purifier

This is the only air purifier that is priced under 5000 or to be exact, the price is Rs.2200 in India.

At this price point, you can’t just look for any advanced features but Kent provides all the necessary features that are required to improve the air quality to a little extent inside your house.

The purifier works by producing environment friendly ozone gas that is sprayed through a fan without any huss, which then kills the airborne viruses/bacteria.

It doesn’t require any service or maintenance or change of parts. And that is the reason why the cost of this device is so less compared to others.

It has 3-mode selector and consumes very less power (3.6 watts).

This portable air purifiers covers a room size of up to 150 sq.ft and is ideal for home offices, living rooms, kitchens and small bedrooms.

It comes in two variants – Wall mounting (TY-500) and Desktop style (TY-100B). The wall mount model comes with a remote control.


  • Uses environment friendly ozone gas to disinfect air borne virus/bacteria
  • Requires no maintenance or change of parts
  • Portable size
  • Less power consumption
  • Remote control


  • Don’t expect it to be a perfect air purifier; It can just be used as an air disinfectant and hence not suited for any of the polluted cities.

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Air Purifier Buying Guide India 2018

1.What is an Air Purifier?

An air purifier is a stand-alone device that has either 1 or 2 fans and multiple filters. Since most pollutants are a form of suspended particulates, these purifiers by making proper use of the advanced filtration technique, separate the pollutants by forcing the air through those filters, thus providing you a clean and breathable air inside the house or office.

2.How Much Power Does an Air Purifier Consume?

Most of the current gen air purifiers consume very less electricity, normally ranging from 15 to 60 watts, depending on the capacity used by filtration and advanced features.

3.Do You Really Need to Buy an Air Purifier? Why?

Air pollution is one of the biggest nightmares of our present generation as it causes various respiratory related diseases like Asthma, COPD (Chronic Obstructive Pulmonary Disorder) and Lung Cancer.

Since we’re living in the polluted cities, there are more chances of us getting prone to these diseases. Not just air filtration, these air purifiers also remove common allergens like pollen, dust, pet hair, bad odor etc

Here is a list of the most polluted cities in India according to a study held by WHO (World Health Organization) in 2016.

Delhi is the number 1 most polluted city in India. It is also the 2nd most polluted city in the world.

City PM2.5 (µg/m3) PM10 (µg/m3)
Delhi 153 286
Patna (Bihar) 149 164
Gwalior (M.P) 144 329
Raipur (Chattisgarh) 134 305
Ahmedabad (Gujrat) 100 67
Firozabad (U.P) 96 218.5
Amritsar (Punjab) 92 210
Kanpur (U.P) 88 201.5
Agra (U.P) 88 200
Ludhiana (Punjab) 86 195.5

So, if you’re living any of these cities, you’re already breathing all the bacteria and viruses through the air and you definitely need to consider buying an air purifier. If you’re from the other cities, you can prevent these diseases in the future by getting one for your home/office.

How Air Purifiers Work?

4.How to Choose an Air Purifier?

Generally, all the air purifiers are rated with a coverage area in square feet. So, it is very simple to pick one. Just, measure your room or office or entire house for which you’re planning to install the purifier and select the one that is rated 100 sq.ft or higher.

For example, if your room is 300 sq.ft, then you should choose the air purifier that covers up to 400 sq.ft, for best results.

Besides the coverage area, the other things you should consider are the features and brand, which we’ve covered later in this guide.

5.How Many Air Purifiers Do You Need?

The count depends on the place where you need some clean and breathable air. Most people pick their bedroom because that is where they sleep and spend most of their time in the house (nearly 8 hours).

For an ideal bedroom, 1 air purifier is more than enough to completely clean the air inside it. If you’ve multiple bedrooms/rooms in your house, then you can either move it to the 2nd room after the air in the 1st room is purified and so on…

However, if you’ve some budget, then you can install separate purifiers for each room.

How to Find Out ‘Area Coverage’ for an Air Purifier?

Selecting an Air Purifier without knowing the size of your room is definitely not a wise decision. Why because, an air purifier with coverage of up to 250 sq.ft might not give you the desired results if you keep it in a room with a size of 500 sq.ft.

We’ll now see the steps that will help us figure out the square footage of a desired area.

Use this square footage calculator, if you’ve any confusions.

A.Single Room

Let us assume, you wanted to place the purifier in your bedroom. The steps to find the square footage for a single room is pretty easy.

Just take a measuring tape and measure the two perpendicular walls.

Our Choice for a Small Room: Eureka Forbes Aeroguard Mist 56-watt

B.Multiple Connected Rooms

In such cases, you’ll have to measure the length and width of each room separately and then club the results.

For example, if you’ve two connecting rooms A & B, and A measures 150 sq.ft, while B is measured at 50 sq.ft, then the total square footage would be 150 + 50 = 200 sq.ft.

Our Choice for Multiple Rooms: Philips 2000 Series AeraSense AC2887

C.Entire House or Office

If you’re planning to get an air purifier for your office or entire house, then you can easily know its size by looking at the paperwork that you got while purchasing the space.

In case if you don’t have the paperwork handy, then simple step outside of your home/office and measure the length & width of your walls from the outside.

And, simply multiply the resulting number with the number of levels your house has.

Say for example, the outer square footage of your house/office is measured at 1200 sq.ft and you’ve two levels, then the total square footage would be 1200 x 2 = 2400 sq.ft.

Our Choice: Blueair 650E Digital Hepasilent Air Purifier

That’s all friends! Now, since you know the area/size of your room/house/office, you should find the right air purifier with the desired space coverage.

6.What Filters to Choose from?

The first thing you should look in an air purifier is if it has the HEPA filter aka high-efficiency particulate air filter.
Air Filters Purification Process

Different Types of Air Filters in Air Purifiers

There are 6 common types of air filter technologies available in the market.

  1. HEPA
  2. Activated Carbon
  3. Ultraviolet Light
  4. Ionic Filter
  5. Pre-Filter
  6. Ozone

#1.HEPA Technology

HEPA stands for High-Efficiency Particulate Arrestor technology, which has the capacity to trap up to 99.97% of all airborne particles as small as 0.3 microns and up to 95% of minute particles as small as 0.1 microns.

It removes PM 2.5 particles and even cigarette smell in order to provide pure breathable air inside your home, office or car.

Benefits of HEPA Air Filter

  • Removes dust, pollen and other allergens
  • Removes most bacteria with 99.97% efficiency
  • The solid particles are not released into the air again

#2.Activated Carbon Technology

The Activated Carbon filter comes with small spongy pores which filters the pollutants as they pass through it. It is very effective in removing smoke, chemicals, false smell and even gases, thus making the air more purer.

Activate Carbon filters are mostly used in conjunction with HEPA filter or Ion Filter and not alone.

Benefits of Activated Carbon Filter

  • Captures gases, chemical fumes, odor
  • Pollutants easily bonds with the carbon and get trapped

#3.Ultraviolet Light or UV Light Technology

Ultraviolet light destroys bacteria and other pathogens by making use of the electromagnetic radiation. The UV light filters, instead of filtration, simply kills the particles by breaking the molecular bonds in their DNA.

It is highly advised to get an air purifier with UV light filter, HEPA and activated carbon filter to remove a wider range of air contaminants.

Benefits of UV Light Filter

  • Prevents illness and air contaminant diseases
  • Instead of filtering, they just destroy the micro-organisms from the root

#4.Ionic Filter Technology

Ionizer or Ion filter is made of a -ve ion generator that sends -ve ions to attract +ve dust and allergens that are present in the air.

So, the particles in the air fall down due to heavy load, thus making the air clear of smoke and foul smell.

Note: An Ion Filter doesn’t help if you’ve dust and pollen. So, you might have to consider an air purifier with HEPA, Activated Carbon and Ionizer.

Benefits of Ion Air Filter

  • Works silently because it has no motor or fan
  • Eradicates ultra-fine particles as small as 0.01 microns
  • Cleans the smoke, viruses and bacteria off the air


The purpose of the pre-filter is to capture the largest particles such as hair fur, dust and some pollen before they enter the main filters such as HEPA filter.

This is also the first line of defense and it helps in prolonging the lifespan of the main filter.

Most of the pre-filters last a lifetime and are even washable & reusable.

In some air purifiers, the pre-filter comes combined with a carbon filter.

Benefits of Pre-filter

  • Catches large particles like hair fur, dust and some pollen
  • Decreases the load on main filter & improves its lifespan

#6.Ozone Purification Technology

Air purifiers with Ozone filter produces O3 or Ozone gas, which as stated by the health professionals, may increase asthma symptoms.

Moreover, it does not removes dust and pollen.

So, it is advised not to use Ozone air purifiers and even we don’t recommend them.

7.Which is the Best Placement for Air Purifier?

For maximum efficacy, you should place the purifier at the corner of the room without any table or almora or wall blocking it from circulating the air. When you give it enough room with doors and windows closed, you’ll experience the best quality air.

8.What is the Cost of Filters? How Frequently Should I Change Them?

The filters should be replaced periodically and the cost of the filters depend on the type of air purifier you’re using.

For example, a HEPA filter lasts for about 1 year, while the activated carbob filter lasts 6 months and the pre-filter lasts for only 3 months.

It is hence advised to inquire about the expected life of the filters and their cost before making a purchase. Normally, you can find this information in the product specifications.

9.What Kind of Features You’ll Need?

Most of the air purifiers in the market comes with variety of useful features to enhance air cleaning and help the user save more on energy consumption. Here is a list of most common added features:

  • Remote Control: You can easily control the air purifier from a comfortable distance wirelessly.
  • Electronic/Touch Controls: Let you select the settings more accurately.
  • Multiple Fan Speeds
  • Programmable Timer: Automatic timer to turn on/off at certain times.
  • Filter Replacement Alerts: These indicator lights alert you when it is time to replace your filters.
  • Ionizer: Helps in capturing small and large particles and is said to boost your mood. But, it is not good when it comes to health. Stay away from this feature.
  • Air quality monitor: Automatically senses the pollution levels in your room and adjusts itself to optimal mode to remove the pollutants.
  • Germicidal Protection: Fight bacteria and viruses present in the air.
  • Carrying Handle: Finally, a handle can help in easy transferring of the air purifier from one room to another.

10.What are the Noise Levels of an Air Purifier?

Generally, most air purifiers come with decibel (dB) rating for different fan speeds. You can check them on the product specifications. Below is a comparison table that helps you get an idea of how much sound an air purifier makes based on its decibel rating (provided in the specs sheet).

Decibel (dB) Rating Sounds by Indoor Appliances
0 dB Minimum threshold for hearing
10 dB Normal breathing sounds
20 dB Rustling/Falling leaves
30 dB Average whisper
40 dB Light rainfall
50 dB Heavy rainfall
60 dB Box fan
70 dB Vacuum cleaner

11.The Pros and Cons

All the products come with both pros & cons and it is the same with the air purifiers. However, you’ll need to consider the ones that suit your requirement and fall under your budget.


  • They’re portable in size and weighs around 10 to 20 pounds.
  • Most lightweight air purifiers come with a handle to move it around the room, while the heavier models have wheels.
  • Most come with HEPA filter for capturing ultrafine particles
  • Consume less power
  • Converts polluted air into breathable clean air.


  • Portable models that use either ionizer technology or electrostatic-precipitator are said to produce a lung irritant known as ozone, which is a serious health concern and you should avoid air purifiers with ionizer for that reason. The others without ionizers are very helpful though.
  • Filters need to be replaced periodically.
  • Filters usually are very expensive and you should know the costs before making the purchase.

12.Best Air Purifier Brands in India

Here is a list of the best brands that manufacture air purifiers in India as of 2018:

  • Philips
  • Honeywell
  • Atlanta Healthcare
  • Xiaomi
  • Kent

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