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Types of Xiaomi Air Purifiers 2021

by Jenny Xiao

To me using an air purifier is more than just a fad, it has become a form of lifestyle. Especially, since I live in an extremely polluted city. These air purifiers are designed to improve air quality by filtering out aggravating particles in the air along with other harmful pollutants such as dust, allergens, smoke, pet dander, and whatnot. Check out our guide on the Types of Xiaomi Air Purifiers

Did you know that indoor air is significantly more polluted than the outside? This is primarily due to indoor air not being able to circulate freely. Since it cannot circulate freely, the particulate matter stays indoor contaminating the household. The Xiaomi air purifiers are constant proofs of evolution and are some of the best home appliances in the market.

Pick any price range, regardless of what particular need you have, you will definitely find a perfect fit. Purchasing an air purifier can be a worthwhile investment for your home, your life.  Anyway, here are the top 5 Types of Xiaomi Air Purifiers that will change the definition of pure air.

After reviewing all the Xiaomi Air Purifiers based on various factors like design, functionality, performance, features, effectiveness and price, my team and I zeroed in on 5 that really stood out. These 5 were further put through a series of tests to determine the best. We found that:

The best type of Xiaomi Air Purifier is Xiaomi Mi Air Purifier 3H. The interior of this device is designed to improve the air suction efficiency and it is equipped with a centrifugal fan to generate a much faster airflow. Additionally, it comes with an OLED screen that changes color based on the air purity level of the room. Most importantly, it is equipped with a HEPA class 13 filter that can filter fine particles and allergens more efficiently.

Types of Xiaomi Air Purifiers

Xiaomi Mi Air Purifier 2H

Unlike the robust models, the Xiaomi Mi Air Purifier 2H is a sleek, gracefully slender model that perfectly fits into your home without costing you the contemporary look of your home. The purifier sucks on dust from all of its sides while releasing clean air from the top of its body. This gadget can work on an auto, or manual mode, depending on how complex or polluted your air is at the moment.  It is one of the best Types of Xiaomi Air Purifiers in the market.

  • It has a 360 degree/ 3 layer filter allows air to be efficiently filtered. Because of the triple-layer design, it can revolve particles larger than 0.3 microns. It is fitted with a high-density EPA filter and an activated carbon filter that removes bad odor and formaldehyde.
  • It is really quiet. In night mode, the purifier produces sound only around 30dB. For all the light sleepers out there, this is like hitting the gold mine.
  • The connectivity to Wi-Fi, Google Assistant, and Alexa enables you to control the device with your phone. You connect it through the Mi Home app, allowing you to toggle with its many neat features such as setting sleep timer schedules and monitoring pollution levels in real-time.
  • Its compatibility with multiple filters allows you to switch and find out what’s best for you. You can fit it with the HEPA version, Antibacterial version, or the Antiformaldehyde version.


CADR (Formaldehyde):60 m³/h
Effective Coverage:18~31m²
0.3μm Particle Removal:99.97%
Filter Lifetime:6~12 month
Sound Power:33~35 dB
Rated Power:31W
Wifi Connectivity:IEEE 802.11 b/g/n 2.4GHz

Xiaomi Mi Air Purifier 2S

The Xiaomi Mi Air Purifier 2S uses a triple filtration system, where the first layer intercepts large visible pollutants like hair, dust, sand, and lint, followed by the second layer, which built with H11-grade filtration technology that traps micron-sized particles like microbes, particulate matter, dust, pet dander, and pollen. The final layer is activated carbon. It deals with all gaseous impurities like bad odours and cooking smells. It is a must-have Xiaomi device.

  • This air purifier is built to avoid air being thrown directly towards you. The dual rotor blade allows the air to be displaced vertically instead of coming swiftly in your direction. This feature is a holy grail for sensitive people who are easily irritable.
  • The purifier showcases an OLED display that shows all the information you need to know. At all times, you’re aware of the air quality in your house, the humidity, and information regarding ambient temperature indoors. The purifier is also wi-fi enabled, so you can remotely control it by connecting it to Echo dot or Alexa via the Mi Home app. 
  • The Xiaomi Mi Air Purifier 2S intelligently adjusts its luminescence according to ambient lighting. When it’s bedtime, the Mi 2S automatically adapts to the environment to avoid disturbing your sleep.
  • The Mi Air Purifier 2S is fitted with an EPA class 12 filter. The filter offers protection from particulate matter with a diameter of approximately 2.5 microns. The filter is quite long-lasting. It doesn’t need changing for about 50 weeks to a year.


CADR (Formaldehyde):310 m³/h
Effective Coverage:21~37m²
0.3μm Particle Removal:99.97%
Filter Lifetime:11~12 month
Sound Power:32~66 dB
Rated Power:29W
Wifi Connectivity:IEEE 802.11 b/g/n 2.4GHz

Xiaomi Mi Air Purifier 3H

The  Xiaomi Mi Air Purifier 3H is an evolution in the Xiaomi air purifier family, picking up right where it was left off.  Visually, it might not look that different from the Mi 2S, but there are several updates that make the air in your home a whole lot cleaner!

  • The interiors have been redesigned to improve the air suction efficiency by integrating square corners in the grille.
  • The air purifier boasts a centrifugal fan instead of the regular eddy fan, which helps the 3H throw out clean air faster.
  • The OLED display now has a color sensor that turns green, orange, and red depending on the quality of air around you.
  • In the unchanged 3-layer filtration system, the Mi 3H is now fitted with a HEPA class 13 filter that captures finer particles more efficiently.


CADR (Formaldehyde):380 m³/h
Effective Coverage:26~45 m²
0.3μm Particle Removal:99.97%
Filter Lifetime:6~12 month
Sound Power:32~64 dB
Rated Power:38W
Wifi Connectivity:IEEE 802.11 b/g/n 2.4GHz

Xiaomi Mi Air Purifier Pro

The Mi Air Purifier Pro comes with three in-built modes that you can play around with according to your necessity. The general mode automatically operates depending on the air quality index in the room. The second, night mode functions with low sound and adjustable lighting. Finally, the high-intensity mode is for when you feel the need to quickly clean the air. The Mi Pro is loaded with features to help you experience breathable air in a way you never have.

  • The air purifier is lighter in weight and has wider openings for discharging purified air. Not only is the filtration more even now, but the need to change filters too often also is not a necessity anymore.
  • The Mi Pro hosts a special laser sensor system that monitors dust pollution and the gas analyzer sensor checks the composition of the air for hazardous compounds.
  • The normal OLED display is now a touch screen, ensuring smoother transitions between modes. You can simply scroll through the information, set the modes directly on the screen of the air purifier, instead of having to do it through the Mi Home app.


CADR (Formaldehyde):500 m³/h
Effective Coverage:35~60 m²
0.3μm Particle Removal:99.3%
Filter Lifetime:6~12 month
Sound Power:32~64 dB
Rated Power:66W
Wifi Connectivity:IEEE 802.11 b/g/n 2.4GHz

Xiaomi Mi Air Purifier Pro H

If you thought you’ve had enough, you’re not quite there yet. The Xiaomi Mi Air Purifier Pro H puts all others to shame. It embodies cutting edge technology, all powered into one. It can deliver upto 10,000 liters of clean air per minute!

  • The advanced OLED display allows you to control the brightness from the left side of the circular screen, while the right side allows you to turn the purifier on and off. The features are included apart from the basic display of humidity, air quality index, and ambient temperature.
  • The Mi Pro H boasts a better and more effective removal of formaldehyde of upto 223m3/h.
  • The large surface area of the H13 high-efficiency HEPA filter paper ensures large amounts of absorption, leading to reduced frequency o changing filters.
  • To top it all off, the device has APP+PI intelligent voice control and can be controlled via voice thanks to XiaoAI smart assistant.


CADR (Formaldehyde):600 m³/h
Effective Coverage:42~42 m²
0.3μm Particle Removal:99.97%
Filter Lifetime:14 months
Sound Power:34.1 dB
Rated Power:70W
Wifi Connectivity:IEEE 802.11 b/g/n 2.4GHz

How to choose what filter is best for you though?

Now that you know what each filter does, the first thing to notice is what the size of your room is. The products listed above are in an order that corresponds to increasing space. If you have a large space that requires intense cleaning, it is best to select one that is 20-40% larger than the room for the best performance.

If you’re rather tech-savvy and prefer being able to see what’s happening, I’d suggest you go for the models 3H or higher. But most importantly, knowing how polluted the area you live in is essential. Check out our guide on the Types of Xiaomi Air Purifiers.

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