I have had this unit for about a month now. Due to smoke from bushfires that reached us and a couple of smokers in the house, the filter is at about 85% left which seems pretty good to me since it has run every day.
It reacts instantly to smoke (from outside) or someone smoking inside.
It can be a bit noisy when display shows high levels of pollutants in the air, but not for too long because cleans them out quickly.
The app control is great! I can turn it on or off even when I am not at home. I can see what the air quality, temperature and humidity is even when I am not there.
I set up some automation so the unit turns on as soon as the air needs cleaning and turn off again when the job is done.
My doctor told me to get an air purifier and research brought me to this Xiaomi unit.
I would recommend this to anyone who, like me, has asthma.
We bought this to deal with the poor air quality from bushfires. Its a great looking device that blends in nicely in a room. It has been very effective at maintaining excellent air quality and does not take long to deal with spikes in poor air quality. The app for controlling the device is excellent - I haven't come across a smart device with such thorough built in automation commands. I have it set up to turn on automatically when the air quality hits a particular threshold, during particular hours of the day, and also have the display lights turn off for bedtime and turn back on in the morning. In summary, this is a great product from Xiaomi!
We bought the Xiaomi because we are immediately next to a large bushfire and have had smoke since late November. Although it is now under control there is still plenty of smoke from other fires. It works well on automatic, is quiet and simple. We considered ordering a fancier air purifier but upon reflection bought two more Xiaomi since they seem to work and will then cover more of the house. No issues, good product, came ahead of schedule. I did write to the company about replacement filters and they will be available soon.
We are very impressed with this unit. It quickly and quietly clears bushfire smoke from the house. The touch screen is clear and simple to use (we haven't used the mobile phone app, so can't comment on that) and I like that it has a button on the back to switch the screen light completely off overnight. It arrived within a week of purchase, and came with an Australian plug. Very happy with the purchase.
It works OK, good for small apartment, works very well in a bedroom. Unable to connect to Mi Home using WiFi, at least when location set to China. Apparently works with location set to India, did not try it.
Very happy with our purchase. We bought this purifier to deal with the bushfire smoke we have been inundated with this season. Works more effectively than our Dyson and is a powerful unit given its relatively small footprint. Was delivered within 2 days which was impressive.