Here's how to choose the right Air Purifier: All you need to know - Times of India

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Here's how to choose the right Air Purifier: All you need to know - Times of India

Here's how to choose the right Air Purifier: All you need to know - Times of India

Posted: 29 Jul 2019 05:47 AM PDT

Air Purifiers have become absolutely necessary for indoor spaces with increased pollutants and allergens present in the air. Living near natural surroundings is becoming difficult in metropolitan cities and with increased levels of pollution, fresh air has become non-existent. In this scenario, air purifiers prove to be a respite from breathing in toxic air. Here's a buying guide to choose the best air purifier for yourself-
  • Why do you need an air purifier?
Air indoors is more harmful than air outside. Also,household products such as deodorants, cleaning agents, inkjet printers contribute to indoor air pollution as well. An air purifier is advised for people with dust allergies, asthma or any other respiratory disease as well as kids. Air purifiers control air quality by getting rid of allergens,pollen, dust, pet hair and other pollutants invisible to the naked eye. Some air purifiers also absorb any kind of unpleasant odor from paints and varnishings.
  • How does an Air purifier function?
Air purifiers use mechanical, ionic,electrostatic or hybrid filtration to cleanse the indoor air. The process includes drawing polluted air through filters which is then circulated back into the room.The purifiers absorb pollutants, dust particles and even odor to purify air inside a room which also ensures better sleep.

How to choose an Air Purifier based on individual preference?

The requirement for an Air Purifier can be different for every individual. Here's what best for few cases-


    • Asthmatic patients should opt for air purifiers having TRUE HEPA filters and should avoid Ozone based purifiers.

    • People having lower immunity levels and those on dialysis should install air purifiers of top quality with True HEPA filter, Pre-filter etc.


    • Only True HEPA Filter technology ensures 100% elimination of allergens.
    • People living in construction areas must ensure to have a purifier having a strong pre-filter. The pre-filters should be replaced frequently.
    • People living in industrial areas should own a purifier with Activated Carbon filters to remove the odour in the air.
    • People having pets at home should also opt for air purifiers with strong pre-filter to avoid breathing in pet hair
  • Things to know before purchasing an Air Purifier
Before you buy an air purifier, there are certain aspects that you must know beforehand. There are different technologies that purifiers work on. Here are the main features-

Levels and Types of filters

Pre-Filters, like foam and non-woven polyester, eliminate large particles like pet hair before the next stage of filtration.

True HEPA (High Efficiency Particulate Air) Filters clean allergens such as pollen, animal skin and dander, mold spores, and dust. HEPA filters can remove 99.9% of all the particles which can be as small as 0.3 microns.
HEPA air purifier filters have to be changed from time to time.
The larger the HEPA filter, the more particles it will be able to remove.The size, material, and construction of the filter highly determines air purifier's performance.

Activated Carbon Filters are used in combination with other filters. Activated carbon/charcoal filters help in absorbing odors and gases thereby neutralizing smoke, chemicals, food smell and fumes.
Carbon Filters also need to be replaced after use over time.

Antibacterial and Germicidal Filters help in eradicating harmful bacteria and germs.

UV filters along with HEPA filters ensures the air you breathe is sterile.
This filter is generally used in hospitals, kitchens, labs and daycare schools to minimize the risk of airborne infections.

Charged Media Filters combine a particle filtration along with an electrostatic charge filter to filter particles as small as 0.1 microns. This filter needs to be replaced as well to work efficiently.

Photocatalytic Oxidation (PCO) filter uses of a titanium dioxide coated metal plate along with UV light to oxidize and physically break down chemicals during the filtration process.

  • Air Change Rate of an Air Purifier
The ACH (or the air change per hour rate) of an air purifier indicates exactly how many times the purifier filters the entire room's air in one hour.
  • CADR Ratings
CADR is the measure of delivery of purified air by an air purifier at its maximum speed setting. It is for both the amount of airflow and particle removal efficiency. Before making a purchase, look for the CADR as higher the CADR,higher will be the efficiency of the air purifier for a given room size.
  • Air Purifier based on Area/ Room size
The size of your room is an important factor for choosing a suitable Air purifier. Bigger spaces will need larger air purifiers so make sure you buy an air purifier that can operate in a space that is 20-40% larger than the room for the best performance.
The choice of the air purifier also depends on the type of room.While buying for a bedroom, choose an air purifier that makes less noise so that you can sleep peacefully. For a living room,a purifier can have variable settings which you can change or decrease when no one is in the room.
  • Customer Service and Warranty
Every air purifier will require changes after 12 to 18 months. Make sure the after-sale service of your product is sound so that the replacement is quick and easy. Also, your Purifier is a big investment for you home so make sure you have long warranty on the product to protect you from manufacturing defects.
DISCLAIMER: The Times of India's journalists were not involved in the production of this article.

Top air purifiers priced under Rs 10,000 - Pricebaba Daily

Posted: 30 Jul 2019 11:25 PM PDT

We live in a polluted world and there is not much we can do about it. However, one way to protect ourselves is to invest in an air purifier. The Indian market offers some budget-friendly air purifiers which offer decent value for money while providing protection from allergens and airborne infections. Check them out here:

Related read: Air purifier buying guide: how to choose the right air purifier

This smart Xiaomi purifier comes with a CADR value of 310 CMH which is highly efficient. It covers an area of 400 square feet. making it suitable for medium-sized rooms. It is laden with a HEPA filter that is capable of removing up to 99.7 percent of microparticles. The OLED display present on it shows real-time PM 2.5 levels, temperature and humidity while adjusting brightness levels according to the ambient light. The appliance works on a three-layered purification system where large airborne particles are removed by the first layer, micron-sized particles are removed by the second layer and odour along with formaldehyde is filtered by the third layer. This smart purifier can be controlled via an app and it also supports various voice assistants.

This offering by Philips sports a CADR value of 270 CMH while its coverage capacity is 677 square feet, making it ideal for living rooms. It features VitaShield IPS Technology with various modes. Its NanoProtect True HEPA Series 1 Filter is capable of eliminating up to 99.7 percent of pollutants. The filter is further equipped with a 4-colour air quality indicator which shows the real-time levels in the room. The appliance also comes with a child-lock feature and a 2-colour Touch Panel UI. The Philips 1000 Series AC1215 Purifier is one of the best offerings to grab in this price range.

This Honeywell purifier comes with a CADR value of 250 CMH and provides coverage for up to 323 square feet. It plays host to a three-layered filtration system where the pre-filter can be washed when necessary. The pre-filter removes dust and other large particles, while the HEPA filter removes PM 2.5 matter. Odour and toxic gases are then cleansed by the third activated carbon filter. A child-lock feature is also present, which prevents kids from fiddling with the controls.

This offering by Eureka Forbes is portable, which means that it is light-weight and easy to move around. It comes with a CADR value of 242 CMH while covering the area of 200 and activated carbon filter that makes it suitable for small rooms. It has an Active Shield technology which helps in removing airborne particles. It is laced with Aerodynamic 360-degree Air Flow which pulls in air from all directions and purifies it. It has an Active HEPA and Active Carbon Filter, where the former deals with up to 99.9 micropollutants and the latter removes odour. Furthermore, the purifier is also equipped with an Anion Generator that lets a user diffuse any fragrance into the room.

With a CADR value of 230 CMH and covering area capacity of up to 350 square feet, this Glen Air Purifier provides great value for money. The appliance follows a 5-step process for purification and comes equipped with an air quality indicator. It also features various modes including Auto, Sleep and more, while functioning through a pre-filter, a HEPA filter, Activated carbon, Cold Catalyst Filter and Built-in Ionizer. The purifier comes packed with remote control as well. If you're looking for a decent air purifier in this price range, the Glen Air Purifier is one of the best bets to make.

This Blue Star Air Purifier comes with a CADR value of 444 CMH and a coverage capacity of 300 square feet. The higher CADR value helps in determining the volume of clean air produced by the filter per minute, and in this case, the Blue Star Air Purifier has an upper hand compared to the competition. It has a three-layer filtration system where the dust and other large particles are eliminated by the pre-filter, while the HEPA filter removes the microparticles. The Activated Carbon then goes on to remove any odours from the room.

Kent's portable Aura Air Purifier features an elegant floral pattern that makes it an ideal addition to your living space. With a CADR value of 180 CMH and coverage area of 280 square feet, this offering is suitable for small bedrooms. The purifier works to clean the air via a HEPA filter that can reportedly eliminate up to 99.7 percent of microparticles. Odour, cigarette smoke and other smells are then removed by Activated Carbon filter. The appliance also has a child-lock feature that can come in handy for parents with toddlers.

This offering by Panasonic has a CADR value of 168 CMH while its coverage capacity is 215 square feet. This means that the appliance is suitable for small bedrooms, while its 4.2kg weight makes it easy to move around. The purifier is further equipped with a Nanoe technology that reportedly enhances bacteria removal ability. A HEPA Composite Filter present inside the purifier removes fine particles that can cause allergies and other infections, while the Econavi technology helps in reducing the energy load. The House Dust Catcher provides a powerful suction near the floor where most pollutants are detected.

The Livpure TruAir purifier comes with a CADR value of 200 CMH along with a coverage area capacity of 300 sq.ft which means that it can effectively clean small rooms. It has a HEPA-based composite filter which can clean minuscule pollutants and allergens. It also houses a colour display with PM 2.5 indicator, particle sensor, temperature sensor and indicator. A default Child Lock function, IR remote and touch buttons are a part of the package as well. The purifier produces cleaner air through a four-step process and is quite portable as it weighs only 5kg.

This vibrant offering by Prestige is budget-friendly and stylish at the same time. It features a CADR value of 3.6 km/hr and is suitable for 325 square feet rooms. The purifier features a four-step process for cleansing indoor air that is achieved via a pre-filter, HEPA filter, Activated Carbon and ionizer. The ionizer helps in rendering the allergens inactive, while the carbon controls odour. The purifier is further equipped with a three-speed control function, smart airflow control sensor, air quality indicator, filter alert function and Child Lock feature.

If you're looking for a more advanced air purifier, check out our list of Top air purifiers priced under Rs 20,000 and Top air purifiers priced under Rs 40,000.

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