Xiaomi Mi 2 Auto Mode Leaves Air Unsafe for 86% of hours | Review

ओह! यह पोस्ट हिन्दी में उपलब्ध नही हैं।अंग्रेजी संस्करण के हेतु यहाँ क्लिक करे l

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The old problem of reverting to auto mode was solved in newer firmware, so the purifier can keep running 24/7 at the level you set it to. So this whole conclusion that it doesnt clean is not valid anymore. The new versions run well, very good bang for buck. I bought 4 meanwhile, one for each room, after being very satisfied with the results, I also always double check with two different PM2.5 meters, which confirm the speed of cleaning the air.


One more interesting thing what I found while using the 2s, which no one seems to have mentioned: Using it together with a (ultrasonic in my case) humidifier in the same room, the pm2.5 readings jump up to 100-120 almost instantly with the humidity increasing – it’s around 120 when the humidity reaches 50-52%. This is very misleading and makes the auto mode useless (if it’s not useless already with the problems mentioned earlier). Or is it really possible that my ultrasonic humidifier emits that much of “particles” which count as pm2.5? It doesn’t look to be dirty, I tried… Read more »

Myanmar Glenn

I’m not as convicnced as I once would have been with this assessment. I also have a Xiaomi 2 air purifer in my home, and thought the same until I connected it to the Mi Home mobile app and realised that inside the app you are able to connect to each of your devices and make settings on the acceptable level of particulate matter so that the device switches on and off. So in my kids bedroom at night I set a level of PM2.5 at 45 at which point it should switch on, and then when it hits PM2.5… Read more »

Glenn Roe

With automation on the app, you can change the thresholds and what they do when when reached.


It is not designed to run at full power mode all the time. It will break your machine. The actual problem is that it has insufficient air cleaning power for your environment. You should make your room more air-tight by adding rubber seals on your windows and doors.

My room is 30m^3 in Bangkok. And it is more than sufficient for me. The PM2.5 value always below 10 μg/m^3. Sometimes it is even as low as 1 μg/m^3.