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Mi Air Purifier 3H vs 3C

Dayang Umairah
September 27, 2021

The popularity of Xiaomi Air Purifier products has skyrocketed. The Xiaomi Air Purifier 3H and 3C have become more popular, and they have many models. Though, they have advantages and disadvantages in comparison to one other, despite their close resemblance.

We'll be touching on the features and differences of the Mi Air Purifier 3C and 3H.

Mi Air Purifier 3C

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The highly efficient three-layer filter core with built-in High Efficiency Filter can achieve a PM CADR of up to 320 m³/h, and, together with the 360° air duct circulation system, purifies at a high speed for long-lasting purified air.

Mi Air Purifer 3H

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This later model was to improve performance while preserving the purifier’s classic appearance.

Their engineers redesigned the entire air duct system to increase the air purifier’s PM CADR by 22%* to 380 m³/h.


The Xiaomi air purifier is a minimal device, white in color except for the gray grilles on top and black display. It easily fits into almost any environment.

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There is almost no difference in size between the models. They have the same dimensions but the slight difference in design is that 3C model can give air from 4 sides and the filter cover is above. This design makes it convenient to replace filter.

The panels on the 3H stretch from the bottom of the air purifier to the top. The Mi Air Purifier 3C features a two-chamber design. The filter in the 3H can be changed using a door on the backside, while the top part of the 3C can be removed to gain access.

3H model uses a circular filter, the device is not open on all sides. The top of this air purifier covers a full filtration area. The holes are arranged on three sides, on all sides except the back (filter cover). The air is then filtered and exits through a grill at the top of the device.


As an air purifier Mi Air Purifier 3C relies on a HEPA filter like most Air Purifiers in general. The cylindrical HEPA filter it carries is able to remove 99.99 percent of particles up to 0.1 micron in size floating in the air such as dust, cigarette smoke, pet dander, bacteria, viruses, and odors.

To clean the air, Mi Air Purifier 3C carries the Clean Air Delivery Rate feature which can supply 320 cubic meters of clean air per hour without making any noise.

3H also uses a 3-in-1 True HEPA filter, which comes with the device. 3H uses an Integrated 360 ° cylindrical HEPA filter that effectively removes PM2.5, formaldehyde and other harmful substances.

App feature


A WiFi connection is also included with the Mi Air Purifiers. Even the Mi Air Purifier may connect to the Google Home smart device ecosystem thanks to a WiFi connection. When its linked to Google Home, we can use voice commands to control the virtual assistant Google Assistant.

The cleanliness of the air can be seen through the App. The indicator is a coloured line with a number that shows the amount of pollutants (PM 2.5) in the air in the room. The level of cleanliness of the room is indicated by three colour lines: Green indicates excellent air quality, orange indicates light to moderate pollution, and red indicates bad air quality.

Room Size

The size of the space that an air purifier can clear is perhaps the most significant factor to consider when finding the right air purifier.

The 3C has a coverage efficiency of 40 m². The 3H model can be effective in 50 m² areas. Of course, it can be used in larger areas, but the effect will be reduced and it will clean the air around it.


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The 3C model is a screen model, but the screen does not have a touch feature. In addition, the information presented on the screen contains less data than the application, as in the 3H model. It also doesn't have a temperature or humidity sensor to track.

3C has a dash LED display.

The digital LED display shows precise real-time information for PM2.5 values, Wi-Fi status and operating mode. The tri-color light ring can be used as a high-speed reference for the indoor air quality, providing a clear picture of the quality of the air that you breathe.

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The Xiaomi Air Purifier 3H screen is touch-sensitive. And gives more feedback. The information on the screen is designed in a more user-friendly way. Thanks to the touch screen, you can switch between modes directly from the screen. Still, the data on the screen does not give as wide information as the data in the application.

3H has a circle LED indicator.

Simply tap the keys on the OLED display to work the purifier, and the reported info is viewable at a glance. Monitor the room air quality data, the purifier’s operational status, etc, are all displayed clearly. The tri-colored light ring quickly tells you the quality of the air in the room.


The Mi Air Purifer 3C operating mode relies on three modes, namely Auto, Sleep and Favourite.

While 3H has 4 modes: Manual, Auto, Sleep and Favourite mode.

Manual mode works by adjusting the room coverage, and in this way, the device itself adjusts the engine speed.


Mi Air Purifier 3CMi Air Purifier 3H
Dimension240 x 240 x520 mm240 x 240 x520 mm
Weight4.6 Kg4.8 Kg
Effective Area106 m2/h126 m2/h
PM CADR (Particles)320 m³/h380 m³/h
Noise range31~61 dB33~64 dB
Rated Power29 W38 W
Rated VoltageAC100-240V~AC100-240V~
Smart controlYesYes


The Xiaomi Mi Air Purifier has shown to be an excellent air purifier for purifying the air at home. It is also perfect for everyday usage because to its utilitarian design, ease of use, low power consumption, and silent performance.

As far as we can tell, the solution to the Xiaomi Air Purifier 3H vs 3C question depends on your preferences. Both of them produce high-quality and clean air. In terms of filtering and cleaning, there is no difference.

Nonetheless, the Mi air purifier 3C stands at RM399.00, while Mi air purifier 3H is at RM589.00.

Whichever suits your environment and lifestyle more, should be the one you choose!

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