Philips Series 3000 Air Purifer
Philips 3000 Series air purifier with AeraSense and vital shield IPS technology purifies indoor air. It has NanoProtect S3 activated carbon that offers lifetime protection against airborne particles. It has ultra-silent sleep mode with a 24-hour digital timer. It also protects against the H1N1 virus. The specially designed Allergen Mode is very effective in removing common airborne allergens. VitaShield Intelligent Purification System (IPS) naturally removes 99.97% allergens & ultra-fine particles as small as 0.02 microns. It also provides you the assured protection from harmful gases like formaldehyde, toluene, and TVOC.

SPECS
THE GOOD
Sensor-touch UI with a big numerical display
NanoProtect HEPA filter
Dedicated special allergen mode and ultra silent sleep mode
Turbo mode for faster purification
Removes 99.99% pollen and house dust mites
Special AL auto mode effectively removes allergens
Ideal for living room/master bedroom
THE BAD
Need regular cleanup of outer filter
Not suitable for mold allergens
Construction wise the filter area is very small while the body is huge
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Xiaomi Mi Air Purifier 2S
Mi 2S air purifier has PET primary filter with ultra-dense EPA and activated carbon. It has an OLED display that displays real-time AQI, temperature and humidity levels. It has 3 layer filtration which removes harmful PM2.5. It can be controlled easily through Mi Home App and Alexa. The Mi Air Purifier 2S display automatically adjusts its brightness according to ambient light. It is meticulously designed to reduce noise while it cleans your air. In sleep mode, the sound produced is almost imperceptible.

SPECS
THE GOOD
360 degree air intake with 3-layer filtration
Allergen and Odour free
Smart control with the Mi Home App
Silent and energy efficient
Display automatically adjusts its brightness according to ambient light
THE BAD
Manual mode can quickly use up the filter
No option to automate using PM2.5 levels
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KENT Aura Room Air Purifier
Kent Aura room air purifier comes with advanced HEPA which has an anti-bacterial coating that kills all the bacteria in the air. Inbuilt ionizer enhances the quality of air by releasing negative ion in the air. The negative ions force the pollutants to stick to walls or other surfaces in the room to make it free of pollutants. It is having a glowing LED that monitors the quality of air constantly. The air purifier also comes with a specially treated activated carbon filter that absorbs odor and foul smell from the indoor air. The one-touch child lock feature is added for kids' safety.

SPECS
THE GOOD
One touch Child lock feature for safety purposes
Good air quality sensor
Inbuilt ionizer which releases negative ion to freshen up the air
Automatic mode works really well
8-hour timer function for convenience of users
THE BAD
Its ionizer produces ozone
The humming noise level sometimes is intolerable
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Honeywell Air Touch Room Air Purifier (Champagne Gold)
Honeywell air purifier has a washable pre-filter that removes larger dust particles, pet hair/dander, and other small particles. HEPA with activated carbon filter helps in the removal of microscopic pollutants and allergens above 0.3 microns. It is a completely ozone-free air purifier and does not release any harmful gases. It has a three-stage advanced filtration system with patented Honeywell HiSiv technology that removes pollutants with more than 99% efficiency. The sleek LED display is easy to operate and has a 3 color indicator for ambient air quality.

SPECS
THE GOOD
Life expectancy of up to 3000 hours
Ozone free air purifier
Removes formaldehyde, toxic gases, VOCs and odour
Unique design protects the air purifier from accidental fall
Sleek, easy to install and uncomplicated ease of operating
THE BAD
The cable is of shorter length
The plug point pins are very thin
No humidifier
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Blueair iClassic 280i Room Air Purifier
Blueair Classic 280i uses intelligent auto mode advanced technology which modifies fan speed based on pollution levels. It cleans air 5 times in an hour that means air purifies every 12 minutes. It is wifi enabled and controlled through the Blueair Friend App. It captures 99.9% of airborne particles down to 0.1 microns in size. The smoke stop filter with the largest filter area serves for best filtration efficiency by removing all dust particles and heavy gaseous pollutants. With just 32 dB of sound level, Classic 280i offers silent operation at minimal fan speed.

SPECS
THE GOOD
Wifi connectivity with integrated sensors for better air quality control
HEPASilent filtration technology removes 99.97% of airborne pollutants
Long lasting filter life
Low noise levels
SmokeStop filter for best filtration efficiency and consistent clean air
Use voice commands to control and monitor air quality
THE BAD
Heavy as compared to other purifiers
No adjustible fan
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Dyson Pure Cool Link Tower Air Purifier, TP03
The Dyson Pure Cool Link air purifier automatically removes 99.95% of allergens and pollutants as small as 0.1 microns. Air Multiplier technology and oscillation feature to powerfully project and circulate purified air throughout the room. The 360° glass HEPA filter with Tris-coated activated carbon removes indoor air pollutants and potentially harmful toxins. Easy filter change with notification on app when the filter needs replacement. It has additional features like easy scheduling, 10 air-speed settings, auto mode, night-time mode, sleep timer, and an easy-to-clean aperture with no fast-spinning blades so its safe for fingers. It is certified by Asthma and Allergy Foundation of America.

SPECS
THE GOOD
Automatically removes 99.95% of allergens & pollutants including dust, pollen, mold spores, bacteria, pet dander, VOCs
Air Multiplier technology and oscillation feature
360° glass HEPA filter & Tris-coated activated carbon filter
Features include easy scheduling, 10 air-speed settings
Certified by Asthma and Allergy Foundation of America
THE BAD
Its average in performance for an air circulator
I guess the extra pricing is only for the brand name, Dyson
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Blue Star BS-AP490LAN Air Purifier
The Blue Star 490 LAN Air Purifier is the perfect for all three types of air pollutants, physical, chemical and microbiological with the help of a 7 stage filtration mechanism. The Microbe Sterilize Technology absorbs and deactivates harmful micro-organisms like bacteria, pollen, molds and dust mites. The high density aluminum pre-filter removes large size fine dust particles, the cold catalyst filter and formaldehyde removal filter together absorb and remove offensive odors, benzene, TVOCs, formaldehyde smoke and VOCs. It contains a digital PM2.5 numeric indicator to monitor real time air purification and real time indoor odour.

SPECS
THE GOOD
Traps fine dust particulate matters up to PM 10 & PM 2.5
Deactivates air borne microbes like bacteria, fungi, staphylococcus
Microbe Sterilize Technology absorbs and deactivates harmful micro-organisms
Touch User Interface with wireless remote control
Silent mode, child lock and filter change indicator
THE BAD
Air intake doesn't seem to be powerful
Air output vents position seems to be not good
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Coway Sleek Pro AP-1009 Air Purifier
Coway is a renowned brand in the world for Air Purifiers and exclusively made in Korea. It uses 3 stage filtration that includes pre-filter cleaning larger dust and heavy particles, a patented urethane carbon filter for removing bad odor and multi-layer HEPA filter for trapping PM2.5 particles allowing only clean air to pass through. Sleek Pro has an innovative slimmer air purifier design with more efficient and maximum airflow. The auto mode automatically optimizes air quality using specialized dust sensors.
