DIY 1.1 Air Purifier– 1 year pack

4.50 out of 5
(2 customer reviews)

6,950 incl. Tax

Out of stock

  1. 1 new and improved DIY 1.1 Fan
  2. 4 HEPA filters (to last you a year)
  3. 1 strap
  4. Smart Air Handbook


Clean Air is not a Luxury

Our DIY 1.1 Air Purifier is a simple and low cost yet effective purifier that eliminates PM2.5 and PM10 particles.

Our tests show that the DIY 1.1 can remove up to 82% of PM2.5 particles from a 150sqft room, all for the under Rs.3550

How does it compare to expensive purifiers?

We tested this simple DIY purifier against some of the biggest brands on the market, and found that the simple DIY performed almost just as well as purifiers costing over 20 times as much!


Does it really clean the air?

Tom the founder of Smart Air and a professor at the University of Chicago tested this using a laser particle counter. What he found was that even low-cost filters and fans can provide clean air. Watch this video to see the test he did.

Original DIY Air Purifier Live Test with Dylos Particle Counter | Smart Air

How often should I change my filter?

We recommend replacing your filter after 90 days of use at 8 hours a day at the latest. That’s maximum 720 hours in total. We ship replacement HEPAs starting at Rs.1300 from our store.

Why 90 days? Smart Air co-founder Gus tested a single HEPA on his DIY 1.0 for 200 days in Beijing to see how long it would last in real Beijing air. After 100 days of use at 8 hours a day, effectiveness dropped 4%. After 200 days of testing, Gus’s dirty filter was only removing half the particles in the room.

India’s air is on average more polluted than Beijing’s air, so in India, we recommend replacing the filters sooner, at 90 days or 720 hours.

We know that buying new HEPA filters is a significant recurring cost, so we do our best to keep prices low.

What’s in the air purifier box?

  1. 1 x DIY 1.1 Fan
  2. 1 x HEPA filter
  3. 1 x Velcro strap
  4. 1 x Information brochure to help you combat air pollution.


We’re pretty confident your DIY air purifier will tirelessly eat away at your air pollution, however mishaps do happen. All Smart Air DIY purifiers come with a 1 year, hassle-free warranty! We’ll replace any faulty fan within a 1 year period from the Invoice Date. Be sure to hold on to your invoice and order number as a record.

Technical Specifications

Room Size Up to 150 sqft
Filters H12 HEPA filter
Noise Level (dB) 48 – 52 – 55 (low – mid – high)
Fan Speed 3 speeds: High, Medium, Low
Energy Consumption (on High) 36 W/ hr
Constructed with Plastic
Dimensions (L x W x H) 12 x 5 x 14 inches
Weight 2 kg
Color White

Get Your Free Guide to Breathing Safe

Join the thousand keeping up on the latest research & knowledge on how to breathe safe. Sign up now and receive a free guide to breathing safe!

2 reviews for DIY 1.1 Air Purifier– 1 year pack

  1. 4 out of 5

    Nitin Bhatia

    Better than basic company purifiers which cost 7-8k. Using from last one year, value for money, however HEPA filter cost look bit more being a local one, though less as compared to company filters.

  2. 5 out of 5

    Lindsay (verified owner)

    Great product and excellent customer service!

Add a review

You may also like…

Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.