Xiaomi Mi Air Purifier 3H and Mi Air Purifier Pro air purifier review

When trying to make sense of the term "ecosystem", especially in the world of consumer computing, the vast majority of people immediately think of Apple and its products. Because, of course, those of the bitten apple are devices that can communicate with each other and all connected to a single account on the cloud. But Apple is not the only company that over time has managed to create a system of products of this type.

In reality, the company that over time has managed to work on a 360 ° ecosystem of products is Chinese, and for many years for many years it has been called "the Apple of China": Xiaomi is undoubtedly the brand that more he has worked on the design and production of smart devices of all types, which go far beyond the world of mobile devices and which features really all types of products. And the air purifiers Xiaomi Mi Air Purifier are a clear example of this: it is a real family of products, available in different sizes, in order to be able to purify the air from germs, molds, bacteria and PM 2.5 but also smoke particles and much more. But do they really work? And most importantly, are they worth the money they cost?

Xiaomi Mi Air Purifier 3H and Mi Air Purifier Pro review

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Package Contents

Definitely minimal and well cared for, the packaging of the two Xiaomi air purifiers is practically identical in the two models and the only difference is, clearly, relative to the size.

The package contains the air purifier, a HEPA filter and the power cable, as well as a quick instruction manual which explains how to connect the device to your local network and configure it through the app available for Android and iOS.

Design and materials

Regarding it Xiaomi Mi Air Purifier 3H, which regarding it Xiaomi Mi Air Purifier Pro, let's talk about products that may like or dislike. Regardless of the version, Xiaomi's air purifier is a decidedly bulky cylinder: the Mi Air Purifier 3H it is 24 x 24 x 52 cm large, while the We Air Purifier Pro it is 26 x 26 x 74 cm large. And this difference in size is due to the fact that, in a nutshell, the main difference between the two models is in the fact that the 3H is suitable for filtering air in rooms up to 45 square meters, while the Pro version is suitable for rooms up to 60 square meters.

Both are made of good quality plastic, and integrate a circular display which in the 3H includes a touch button for management, while in the Pro it does not integrate any control function: in the larger model, to switch on, switch off and change the operating modes, a button on the upper surface must be used.

In the front display it is possible to check in real time the air quality, which is also reproduced through a circle that changes the color based on the values, the ambient temperature, the humidity, the filtering mode and the connection to the WiFi network.

Filter system - Xiaomi Mi Air Purifier

In both models u is usedn 3-layer HEPA filter which should eliminate substantially almost all the fine particles present from the air and guarantee a filtering of 99,97% up to a size of 0,3 microns. It is a very advantageous filter especially for allergy sufferers or in any case has respiratory problems.

Xiaomi Mi Air Purifier 3H and Pro air purifier review

In fact, the filtration takes place in 3 different phases, each of which is entrusted to one of the layers of the filter: the first layer filters the larger particles, such as dust, the second is a HEPA grade H13 filter, which manages to capture particles with a diameter of 0,3 microns and above (including for example PM 2.5, smoke particles, pollen and even pathogenic bacteria), while the third layer is made of activated carbon with the which formaldehyde or other harmful chemicals are absorbed and which is able to eliminate even bad odors.


Everything is managed both via the smartphone application and via the control buttons on both models. The intake air adjustment can be automatic or manually set on three levels: in this case the purifier will increase or decrease the operating intensity based on a series of integrated sensors with which it is able to analyze the air quality. To do this, use 3 sensors: a PM2.5 laser sensor, a temperature sensor and a humidity sensor.

Xiaomi Mi Air Purifier 3H features:

  • different types of cylindrical filter: True-HEPAanti-formaldehydeanti-bacteria
  • CADR of 380 m³ / hour suitable for a surface up to 45 M²
  • compact dimensions (24 x 24 x 52 cm)
  • electrical consumption up to 38 W
  • laser sensor for the particulate atmospheric and temperature and humidity for real-time monitoring
  •  OLED touch
  • connectivity WiFi a 2,4 GHz
  • remote control through the app We Home
  • compatible with Alexa e Google Home
  • low noise of 32 dB (A)

Xiaomi Mi Air Purifier Pro features:

  • different types of cylindrical filter: True-HEPAanti formaldehydeanti bacteria
  • CADR of 500 m³ / hour suitable for a surface up to 60 M²
  • compact dimensions (26 x 26 x 74 cm)
  • electrical consumption up to 66 W
  • noise level lower than 69 dB (A)
  • laser sensor for the particulate atmospheric
  •  OLED touch
  • real-time air quality monitoring
  • connectivity WiFi a 2,4 GHz
  • remote control through the app We Home
  • compatible with Alexa e Google Home

But it works? Yes. During the period in which I tested it, I repeatedly saw it start rocket, especially if you had smoked it inside, or after having sprayed a perfume spray: in a few minutes, after seeing the fans running at full speed (and producing a noise that is certainly less marked than the average, but still remarkable), the quality of the air has returned to "healthy" and the stench of cigarette smoke has totally disappeared. At the minimum operating mode, however, the noise is practically imperceptible.

Xiaomi Mi Air Purifier 3H and Pro air purifier review

Via the app Xiaomi Mi Home it is also possible to manage the air intake speed, see all the data detected in real time, configure the display and program the automatic switching on and off of the devices. However, there are totally no statistics, which would have been interesting to be able to see, perhaps in a graph, in order to have a more complete picture of the air situation in your home or office.

Finally, be the Mi Air Purifier 3H and the We Air Purifier Pro, are fully compatible with both the Google Assistant and Alexa, and can also be controlled by voice only.

Maintenance - Xiaomi Mi Air Purifier 3H and Xiaomi Mi Air Purifier Pro

The maintenance of the Xiaomi Mi Air Purifier 3H and the Xiaomi Mi Air Purifier Pro is quite simple. The filters can be cleaned without any problem and have an average life of about 150 days, after which they will have to be replaced: the price of the filters is variable, depending on the type chosen and the store where you will buy them, but the figure is around 40 euros.

Xiaomi Mi Air Purifier 3H and Pro air purifier review

And in addition to the attention to be given to the filter, which can be followed directly through the application which, among other things, will also alert you if it is time to replace it, as maintenance poco other things to do, indeed practically nothing.

Selling price in Italy and conclusions

Anyone who follows the world of air purifiers will know very well that these are not cheap products. Just think that the Dyson model costs between 400 and 500 euros. The reality of the facts, however, is that Xiaomi's products are definitely cheaper, and therefore raise the bar related to the quality / price ratio: Xiaomi Mi Air Purifier 3H costs 199 euros, while the Xiaomi Mi Air Purifier Pro costs 270 euros with shipping from Europe.

Xiaomi Mi Air Purifier 3H and Pro air purifier review

Which is not bad at all. Of course, these are very particular products and in fact rather expensive, and which point to an equally particular user and attentive to factors to which not everyone pays the right attention. For each bike, however, both the Air Purifier 3H and the Air Purifier Pro are excellent products, which really bring a benefit to the quality of the air indoors, especially in winter or at night: in that case, there is a specific modality designed just to purify the air while sleeping.

In a nutshell it is an excellent product, but to justify the expense it must really interest you and be useful to you. And the difference in price with those made by more famous brands such as Dyson, the total integration with the digital assistants and the excellent filter they use are only the icing on the cake.


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