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Smart air purifiers developed by IIT Madras’ Air Ok Technology


Air Ok Technology has developed a smart air purifier for Indian conditions.

Product or concept

The smart air purifier “Vistar” is able to filter out a combination of particulate matter, microbes, fungus and gaseous substances.

Problem being solved

Reduces the toxic pollutants in Indian indoor air environments.

Process or technology involved

  • The company has developed its own patented technology – EGAPA - efficient granular absorbent particulate arrester.
  • The EGAPA filter can filter out harmful pollutants such as particulate matter, microbes, fungus, and gaseous substances such as carbon monoxide, nitrogen dioxide, sulphur dioxide.

Sustainability benefits

Reduces the harmful toxins in an indoor environment.

User segments that will benefit

  • Healthcare Sectors
  • Hospitality Sectors
  • Offices Spaces
  • Residential/Apartment Complexes

People or organizations involved

Co: Air Ok Technologies

People: Deekshit Vara Prasad, Yasa Pavan Reddy and Vanam Sravan Krishna 

Innovations or USPs

  • The combination of the components removed is claimed to be the first of its kind in India.
  • Clean air delivery rate is 10% higher than those available in the market.
  • Sensors fitted can determine the level of pollution – switches the device on and off depending on the level of pollutants in the given space.
  • Circular shape of purifier gives 360 degree coverage.

Related engineering, science or business topics

  • Pollution Control and Management
  • Environmental Engineering
  • Mechanical Engineering

Awards & recognitions

  • Air Ok is a Start-up incubated at IIT M Research Park.
  • SAR Group backs the start up.

Other interesting highlights

Pilot test for the product was conducted at Child Trust Hospital in Nungambakkam.

Start-up incubated at:



How to Breathe Fresher Air Instantly in 3 Simple Steps (Air Pollution)

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How Does an Air Purifier Work? (Do Air Cleaners Really Work for Dust, Mold and Allergies?)

Take a journey for this topic: Learn more, experience stuff, do something...

Know more about the people behind this

IIT Madras-incubated Startup launches indigenously made Smart Air Purifier : The article talks how the founders developed the smart air purifiers for the Indian market.

Chennai Startup AirOK Launches India’s 1st Locally Developed Smart Air Purifier : The article observes the growth of the start up AirOK Technologies.

IIT Madras-incubated startup develops smart air purifier; to be priced at almost half of those in market now : The articles follows up on the features provided by AirOK Technologies' Vistar, the smart air purifier.

Make a visit to get a first-hand experience

Air Ok Technologies : Their head office is at Tharamani. You can contact them for a demo of the product.

Involve yourself/participate in activities

Purchase the product/solution

AirOk Technologies VISTAR-550 Air Purifier : Their product is available on Amazon.

Air Ok Technologies : There are varieties of air purifiers developed by Air Ok technologies. You can see the products on their website.

Connect with experts

Centre for Environmental Health : One of their focus areas is air pollution. You can contact them through their website.

Tamil Nadu: Envis Centre : They provide details regarding the state of environmental health in Tamil Nadu. You can contact them through the website or visit their office.

Experiment through do-it-yourself projects

How to Make a DIY Air Purifier : This purifier has the capacity to reduce PM 2.5 from the indoor air environment.

How To Make Homemade Air Purifier : The video provides a simple step by step instruction to make a air purifier for your home.

DIY Air Purifier! - The "2 Gallon Bucket" Air Filter! : The video describes the components and the steps involved in making your own air purifier.

Learn more

Air Purifier - Can it Beat Delhi's Pollution? : The video talks about the important specifications in a conventional air purifier.

How Air Purifiers Work : The series of articles provide information on the various components and processes present in conventional air purifiers.