These are the best air purifiers available in the Indian market

The deteriorating air quality ahead of the winter season has made air purifiers a necessity these days. There are a few things to keep in mind while buying air purifiers, including room size, clean air delivery rate (CADR), air changes per hour (ACH), the type of filter and its replacement cost. Here are some of the best options to choose from.

Xiaomi Mi 2c (Rs 6,499)

The Mi Air Purifier 2C features dual filtration technology, which includes a primary filter that takes care of the large particles and HEPA filter that eliminates up to 99.97 per cent of small particles (up to 0.3 micron). It has a high CADR (Clean Air Delivery Rate) of 310 cubic metres per hour, which allows clean air circulation. However, it does not have an OLED display, but can be controlled using the Mi Home app.

Xiaomi Mi 2S (Rs 8,999)

The third-generation Mi 2S continues to have the same design and smart functionality along with the circular display - a compact, squarish tower design that does not occupy much space. A little less than 1000 holes are spread across the three sides to draw the impure air, pass it through the 360-degree three-layer circular air filter and push the clean air from the top. The 360 degree cylindrical 3-layer filter has an outer layer that removes large airborne particles such as hair and dust; the middle layer using H11-grade filter action technology that removes micron-sized particles and catches harmful bacteria; the inner layer made of highly activated carbon, for effectively removing formaldehyde and other harmful substances and odours. It also consists of a circular OLED display that shows real-time PM 2.5 level along with temperature, humidity level, Wi-Fi status and mode. The 2S has a clean air delivery rate of 310 cubic metres per hour, which can be paired with the Mi Home App and controlled from anywhere. The device also supports voice commands and is both Alexa and Google Assistant compatible.

Philips AC1215/20 (Rs 9,999)

The air purifier is equipped with Vitashield Intelligent purification system with auto mode and allergen mode, which automatically senses air quality and removes 99.97% airborne pollutants as small as 0.003 microns. With a CADR of 270 m3/hour, it can purify a standard room in just 12 minutes and is recommended for rooms of 226-333 sq ft. The air purifier features a series of filtration process, including pre-filter, activated carbon filter and double-layered H13 Grade True HEPA Filter. Its four-colour air quality indicator gives a real-time air quality feedback. Philips claims to remove 99.90 per cent bacteria and viruses and has been tested to remove airborne H1N1 virus, 99.99 per cent pollen and house dust mites.

Honeywell AirTouch I8 (Rs 13,999)

The AirTouch features a three-layer filtration process - the company's HiSiv filter, HEPA filter and a washable pre-filter. It eliminates large dust particles, bacteria, formaldehyde and volatile organic compounds and claims to offer PM2.5 removal efficiency of more than 90 per cent. The air purifier has a touch panel for operations, which is designed to work in a room with 36sq m coverage area and CADR of 300m3/hour. It also has a washable pre-filter that removes larger dust particles, pet hair/dander, soil, etc.

Kent Alps+ (Rs 18,240)

A rectangular size air purifier that comes with real-time air purity monitor. The PM 2.5 level is displayed (using colours and numbers) on the digital screen and comes with three layers of filters - the primary filter that removes large particles, the specially treated carbon filter removing odour and the antibacterial HEPA filter, which removes bacteria and PM 2.5 pollutants. The air purifier works well in a coverage area of up to 43 sq/m.

Dr Aeroguard HPA 500 (Rs 19,990)

The Aeroguard features a 9-stage filtration process. The pre-filter removes large particles such as dust, hair, pet danders and fibres, lung filter removes dust particles holding harmful dust that settles in lungs and the HEPA filter, which is capable of removing up to 99.97 per cent of micro-particles, such as particulate matter (PM 2.5 and 10), fine dust, pollen, mould spores and H1N1 swine flu, with the help of H1N1 filter embedded in it. The activated carbon filter binds gases and odours of natural and chemical origin, the anti-bacterial filter inhibits the growth of micro-organisms and prevents their breeding on filters, the photo catalyst TiO2 filter breaks down all organic molecules and destroys micro-organisms, UV technology for destroying viruses and air bacteria, and ioniser that neutralizes particulate matter and maintains freshness level in the room.

Atlanta Healthcare Universal 450 (Rs 21,560)

Atlanta Healthcare comes with a built-in humidifier and a 'seven-stage' air purification system, including pre-filter, anti-bacterial filter, H13 grade HEPA filter, activated carbon, photo catalyst, UV light and ionizer to keep indoor air free from dust (PM2.5 and PM10), gases, smoke, odours, allergens and airborne infections. It has a CADR of 225 m3/h, an air quality sensor and filter change indicator.

Blueair Sense+ (Rs 31,999)

A high-end air purifier, which claims to capture 99.97 per cent of airborne particles, down to the size of 0.1 micron (the average cross-section of a human hair is 50 microns). In a room size of approximately 194 sq. ft, it can purify the air five times in an hour. It comes with two filters, each comprising a particle filter and an activated carbon filter for removing heavy gaseous pollutants, and can be controlled via a mobile app. It also consists of a built-in motion sensor, which features a swipe up motion to change the fan speed.

Dyson Pure Hot+Cool (Rs 54,900)

Dyson Pure cleans the dirty air, streams back the clean and cool air (but can't replace your air conditioner) and keeps the room warm in winter. It lets the air pass through a 360-degree glass HEPA filter, which captures 99.95 per cent of fine particles, followed by the front and rear bladeless fans. It consists of a thermostatic controlled heating system, in which it shuts off after reaching to a pre-set temperature and resumes heating when the temperature falls down. Dyson has also introduced the PTC (positive temperature coefficient) technology, commonly used in aircraft heating systems, for quickly and evenly heating the indoor space.

Amway Atmosphere Mini (Rs 60,000)

Amway Atmosphere Mini can remove particles as small as 0.0024 microns with a single pass efficiency of 99.99 per cent. It comes with 3 in 1 filter which includes a pre-filter layer to capture larger, airborne fibres and hair; a particulate filter to captures smaller particles such as PM2.5, PM 0.1, common bacteria & virus; and the carbon filter layer to remove household odours and gasses. It has a CADR of 220 m3/ hours and can be controlled using the companion app - Atmosphere Connect.