I have prepared a list of Air Purifiers based on reviews and feedback. Do share this list if you find it helpful.

Philips AC1215/20 Air purifier, removes 99.97% airborne pollutants with 4-stage filtration

• Vitashield Intelligent purification automatically senses air quality and products Effective Filtration Size (in microns) >= 0.02 and for 0.3+ microns is 99.97%, 800 times smaller than PM 2.5
• Purifies a standard room in just 12 minutes with a CADR of 270 m3/hour (Standard room size is 18 ft by 12 ft with an 8 ft ceiling height). Recommended room area: 226-333 sq ft.
• 4 Stage Filtration process through pre filter, activated carbon filter & double layered H13 Grade TRUE HEPA Filter
• 4-color air quality indicator gives real time air quality feedback, Packaging: > 90% recycled materials
• Removes 99.90% bacteria and viruses, tested to remove airborne H1N1 virus
• Removes 99.99% pollen and house dust mites, Allergy friendly quality tested by ECARF
• Philips is the no.1 brand in Air purifiers in India (Source: Euromonitor International Limited; Consumer Appliances 2018ED)
• 100% Ozone free and natural filtration
• Warranty: 2 + 3 years extended warranty worth INR 3000 FREE on product registration
• In case of any product queries / issues, please contact the Philips Air customer care on: 18001031235

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

• True HEPA Filter with filtration efficiency of 99.97% for particle size up to 0.3 microns
• OLED touch Display (Shows real time PM2.5 concentration, Temperature and humidity, Wi-Fi connection and Working mode)
• Smart app control, Rated Frequency: 50/60 Hz
• Works with Google assistant and Amazon Alexa
• 360 Degree Air intake with 3 Layer Filtration
• High CADR of 380 m3/h
• Effective coverage area upto 484 sqft
• Warranty: 1 year warranty from date of purchase on main device (excluding filter)
• Power: 38 watts
• Includes: Air Purifier, Filter, User Guide, Power cord

Coway Sleek Pro AP-1009 Air Purifier (Pre Filter, Patented Urethane Carbon Filter & Green Anti-flu True HEPA Filter) (Coway AP-1009)

• Air Purifiers are 100% made in Korea Air Purifier Type- Sleek Air Purifier
• Air Purifying Method: Green Anti-flu HEPA Technology. | Reddot Design Award Winner Coverage Area: 355 sq. ft / 33 sq. m. (Air Purifiers Most Suitable for Bed Rooms, Small Offices) | Clean Air Delivery Rate (CADR): 303 cubic m/hr (CADR is Volume of fresh, clean air given in an hour) | Super Silent Operation of Air Purifier
• Unique Air Filtration Process- Pre Filter, Patented Urethane Carbon Filter (To Deodorize the air), Our Multi Layered Anti-Flu Green HEPA Filter effectively traps PM2.5 particles allowing only clean air to pass through Optimized Airflow: innovative flow path design allows for a slimmer air purifier design with more efficient and maximum airflow
• One Touch Air Speed Adjustment: Four Speed Steps (1-3, Turbo) Real Time Air Quality Indicator: Clean, Low Pollution, Medium Pollution, High Pollution Longest Green Anti-flu HEPA Filter Life: 8500 hours Supply: 230 Volts, 50 Hz. | Power Consumption: 38 Watts. | Noise: 22-49 dB. | Dimensions (WHD): 335 x 686 x 204 mm | Gross Weight: 6.5 Kg
• Warranty: 5 years on air purifier motor and 1 year on electrical parts

Honeywell HAC25M1201W 53-Watt Air Purifier For Room (White)

• Air Touch A5 indoor air purifier by Honeywell, a Fortune 100 company.
• Versatile Coverage Area and efficiency – CADR (Clean Air Delivery Rate) – 250 cu m/hr, offers up to 30 sq.m coverage area for a room with 2.74m height – suitable for use in living rooms and bedrooms
• Three stage advanced filtration system that removes pollutants with more than 99% efficiency.
• Washable pre-filter that removes larger dust particles, pet hair/dander, soil etc and improves the life of HEPA filter
• Combined filter with High-efficiency HEPA and activated carbon filter that removes any microscopic pollutant and allergens above 0.3 microns including PM2.5 and pollens
• It also removes removes formaldehyde, toxic gases, VOCs and odour.
• Completely ‘Ozone Free’ Air Purifier. Does not emit any harmful gases as a byproduct of the filtration technology
• 3D Air Flow Design ensures optimised circulation
• Approximately 3000 hours of filter life, basis the ambient pollution can work for a year if used for 8 hours daily.
• Warranty: 1 + 2 years extended warranty on product registration within 15 days from purchase. Visit honeywellsmarthomes.com for more details.
• Power: 46 watts
• Includes: Purifier, Filters, Quick start guide, warranty card

Dyson Pure Cool Link Tower WiFi-Enabled Air Purifier, TP03 (White/Silver)

Dyson Pure Cool Link Tower WiFi-Enabled Air Purifier, TP03 (White/Silver)

• Manufacturer warranty only applicable on products sold by seller “Dyson India”. No other seller offers manufacturer warranty from brand Dyson in India
• Intelligent Purification; Automatically removes 99.95% of allergens & pollutants as small as PM 0.1 (0.1 microns) including dust, pollen, mold spores, bacteria, pet dander, VOCs and other harmful gases/odors
• Air Multiplier technology and oscillation feature to powerfully project and circulate purified air throughout the room. Cord length : 1.9m
• Engineered to project and circulate purified air across LARGE spaces. Dual functionality with fan feature along with air purification
• Dyson purifiers have a lower face velocity unlike some other conventional purifiers. This, along with the high-efficiency VACUUM SEALED 360° Glass HEPA FIlter ensures that harmful ultra-fine pollutants are NOT released back into the room & stay captured in the filter media
• 360° Glass HEPA Filter & Tris-coated Activated Carbon Filter. The H-13 Glass HEPA Filter is pleated over 200 times and densely packed with borosilicate microfibres
• Automatically monitors, reacts & purifies. Dyson Link app provides real-time air quality reports and allows you to remotely control your machine from your smartphone. Comes with a remote control that is magentizes for easy docking on top of the machine when required
• Features include 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 little fingers or paws
• Certified Asthma & Allergy Friendly by AAFA (Asthma and Allergy Foundation of America)
• Small footprint and 360° air-intake allows for easy placement ANYWHERE in the room ; Air Flow Level: 1300 CMH ; Control Type: Remote Control, App Control, LCD Display ; Technology Used: Advanced Sensors (PM 2.5, PM 10, NO2, VOC, Temperature, Humidity), Air Multiplier Technology (Patented), Vaccum Sealed Filters (HEPA -13A, Activated Carbon) ; Power Consumption: 40W ; Other Features: Quiet Mode Sound Level – 42.3 dBA; Sound level at Max Setting – 64.4 dBA
• Please contact_us on: [ 18002586688 ] to avail Free Installation & Setup services or for any other support

I hope this list was helpful. Please do share if you found it helpful.