Mi Air Purifier 2 Long Term Review-Pros and Cons

Mi Air Purifier 2 is a stylish compact air purifier which is priced at Rs.9,999. I have been using this air purifier at my home from December 2016. Based on my last one year’s experience,  here is the Mi Air Purifier 2 review.

Mi Airpurfier 2 comes with triple layer 360-degree cylindrical filter.  This triple-layer design claims to removes particles larger than 0.3 microns with a high-density EPA filter, while an activated carbon filter removes formaldehyde, bad odor, and other harmful substances.

Mi Air purifier 2

Mi Air Purifier 2 Review- Pros and Cons

Mi Air purifier 2 Pros

Here are the few things which I liked with this air purifier.

  • Design: It is one of the best-looking air purifiers in the sub 10k price range.
  • Quiet operation:  In night mode, it is almost silent. Xiaomi claims it produces a noise level as low as 30db in night mode. Though I have not tested actual decibel, it is quieter than the other air purifiers I have tested so far. It is hardly audible.
  • Sync with a smartphone: This Xiaomi air purifier can be paired with the smartphone through WiFi. Using the Mi Home app, you can monitor pollution level in real time or control the air purifier.
  • Easy filter replacement: As it has a single cylindrical filter, it is very easy to change the filters.

Mi Air purifier 2 Cons

Over the close to one year experience with this air purifier, I felt few things could have been better. Here is the list of Mi Air Purifier cons.

  • Cost of filter: According Xiaomi, the filter should be replaced every 4 to 6 months depending on the usage. MRP of the filter is around Rs.3,000. That means for 1 year 2 filter replacements required which cost around Rs.6,000 per year. In my usage wherein I have used the purifier almost 20 plus hours a day, I was required to replace it every 3 months. Otherwise, some bad odor starts to come in from the purifier.
  • Automatic shifting to auto mode after 3 hours:  Irrespective of the mode you have selected and pollution level, this purifier automatically shifts to auto mode after 3 hours. So, even if the air pollution is high, you cannot run at high speed more than 3 hours continuously. Need to change the mode manually every 3 hours if required.
  • Filter availability: It is becoming a common problem for buying Xiaomi devices. Sometimes, filters are not available to buy. It says  Out of stock.
  • No real-time air pollution monitor:  Exact air quality can be monitored through the Mi Home App. However, if you don’t have the WiFi there is no way to see the air quality level. There is a LED indicator. But it will give only rough idea.

Mi Air purifier 2 review summary: Priced at Rs.9,999, this air purifier offers a lot. Stylish compact design with max 310m/h Clean Air Delivery Rate (CADR) is the biggest USP. However, it lacks in few areas.

7 comments… add one
  • MOHAMMED ASIF Oct 27, 2017, 9:35 pm

    Hello Anirudh, Nice write up & best of all nice review. However, I would like to know if an air purifier is good for our immune system – I understand we get pure air t breathe but doesnt it mess up the ability of our body to resist the outside air ? I hope I am making sense. Please let me know if I am not…..Thank you

    • Aniruddh Oct 28, 2017, 11:12 am

      Hi Asif,

      Air purifier helps to breathe a better air. It reduces the quantity of polluted air we intake. Whenever we are outside, we will definitely take polluted air.
      I am not a doctor to comment on health & immune system functionality. What I feel is that it helps to reduce the pollution accumulation in our body. Also for babies, kids and old age people, it helps. Recently during Diwali time, air pollution level went very high. Even all my family members felt throat pain, difficulty in breathing etc. However, once I reached back to home, where air purifier kept, felt normal. Pollution is damaging our cells. Only thing is lesser exposure less damage. If a person suffering from dust allergy, if air purifier is working, his suffering will reduce. If a dust allergy person made to expose more and dustier environment will reduce his allergy?

  • Adarsh Nov 10, 2017, 5:33 pm

    Hello Anirudh,
    Nice article after read this article i’m know all about air purifer..
    Thnkyo for sharing

  • Dhruv Nov 11, 2017, 7:17 pm

    Hello Anirudh! I want to know if there is a difference between HEPA filter and High Density EPA filter as Xiaomi mentions on their website. They also mention Toray EPA once but no mention of HEPA. Also is it ozone free?

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  • manickaraj Jan 24, 2018, 7:33 pm

    Will the mi purifier power up if the filter life expired? Or you can still use it?

    • Aniruddh Jan 28, 2018, 5:25 pm


      It will switch on. But it is not recommended to use it. It will do more harm than doing good.

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