Blueair 411 Auto Vs Xiaomi Mi 3H – Trusted Comparison (2023)

Lately, I have received a lot of queries about whether the Blueair 411 Auto is a better choice for buying than the Xiaomi Mi 3H air purifier.

Although the Xiaomi has many more advanced options, covers larger rooms, and is generally superior to the Blueair 411 Auto, I decided to test and compare them in detail. Firstly, I want to mention that Xiaomi Mi 3h covers rooms up to 484 sq. ft., while the Blueair 411 Auto covers rooms up to 190 sq. ft.

Blueair 411 Auto Vs Xiaomi Mi 3H - Hands-on Comparison
Photo: / Milan Antonic

They both are built of plastic, which is of okay quality. What I like about the Blueair is the changeable pre-filter available in five colors. Also, the Xiaomi is a huger device, so keep in mind that you will need more space in your room if you opt for it.

Furthermore, I want to say that they both use high-quality filters. Blueair uses a three-stage filtration technology with HEPASilent as an additional stage, while Xiaomi uses a classical three-stage filtration technology.

How did they perform on performance tests, which one uses better filters, and which one is an overall better buying option you will find out in the following article.

Specs: Blueair 411 Auto Vs Xiaomi Mi 3H

Product ImageBlueair 411 AutoXiaomi Mi 3H
Model411 AutoMi 3H
Dimensions (inches / cm)16.7 x 7.8 x 7.8 inches (42.5 x 20 x 20 cm)9.5 x 9.5 x 20.5 inches (24 x 24 x 52 cm)
Weight (pounds / kg)-10.6 lb (4.8 kg)
Clean Air Delivery Rate (CADR)--
Coverage (4.8 ACH) 190 sq. ft. (18 m²)484 sq. ft. (45 m²)
Performance Ratings
Filtration TechnologyWashable Pre-filter, Particle Filter, and Carbon FilterPre-filter, True HEPA and Active Carbon Filter
Filter Replacement IndicatorYesYes
Filter Lifeabout 6 months6-12 months
Power Consumption 10W38W
Operating Costs Ratings
Number of Fan Speeds3 – Night Mode, Everyday Mode, Boost Mode6 – Automatic Mode, Sleep Mode, Speed 1, Speed 2, Speed 3, and Manual Mode
Air Quality Sensor YesYes
Air Quality IndicatorYesYes
Auto Mode YesYes
Smart App NoYes
Voice Control NoYes
Other FeaturesN/ATemperature and HumidityParental ControlsDisplay Off
Noise Level (low – high)41.6 – 61.2 dBA40.9 – 65.4 dBA
Noise Ratings
In-Depth ReviewBlueair 411 AutoXiaomi Mi 3H
PriceCheck Price on AmazonCheck Price on Amazon

Features Overview

If we compare features, it is clear that the Blueair 411 Auto can’t parry Xiaomi. Simply, the Blueair is a minimalistic air purifier with not that many advanced options, while the Xiaomi is a more advanced air purifier with many options built in.

Blueair 411 Auto Vs Xiaomi Mi 3H - Side-by-side
I placed these two air purifiers side by side. Photo: / Milan Antonic

I put all these on paper and sum up all the most essential features of these two air purifiers, which you can find explained in detail in the following sections.

Air Quality Sensor and Indicator

Blueair has improved its product lines with new and more innovative models in the past few years. The most significant difference in new models is in the air quality sensor, which is now the main part of models with the word “Auto” in their name. The air quality sensor on Blueair 411 Auto detects dust particles in real-time. Those readings are used to show the current air quality through the air quality indicator located on the front.

Blueair 411 Auto Vs Xiaomi Mi 3H - Air quality sensors compared
Air quality sensors compared. Photo: / Milan Antonic

The Xiaomi Mi 3H has an air quality sensor as well. It detects dust particles in real-time and works with other features such as air quality indicator, PM2.5 indicator, and auto mode.

Overall, having an air quality sensor is a big step upward and a great feature that will make it much easier to use any of these devices daily.

Auto Mode

I already said that the air quality sensors of these two air purifiers work in combination with an air quality indicator, which I explained above, and auto mode.

Blueair 411 Auto fan grilles on the top
Blueair 411 Auto fan grilles on the top. Photo: / Milan Antonic

What is an auto mode? Basically, when the air purifier is switched on auto mode, it will change the fan speed (working mode) based on the current air quality, which it gets from the air quality sensor. 

Temperature and Humidity Meter

In addition to the air quality sensor, the Xiaomi Mi 3H has a temperature and humidity meter, two amazing sensors that read the current temperature and humidity in the air. In that way, you will get a more detailed picture of the current air quality in your room.

Xiaomi Mi 3H fan grilles on the top
Xiaomi Mi 3H fan grilles on the top. Photo: / Milan Antonic

You can read these sensors’ data through the smart app or on a display located on the front of the device.

Filter Reset Indicator

What I also like about these two air purifiers is that they have a filter reset indicator, which will notify you when it is time to replace the old filters.

On the Blueair 411 Auto, the filter reset indicator is located just above the control button and lights red when active. On Xiaomi, this indicator is shown on the display when turning the device on, and you can check the filter life at any time through the smart app.

Smart App

Another option available only on Xiaomi is a smart app. Simply, Xiaomi Mi 3H can be connected to the Mi Home smart app, which is available for Android and iOS devices.

Xiaomi 3H - Dashboard for Controlling the Device
Xiaomi Mi 3H – Smart app. Photo: / Milan Antonic

This is a handy feature that not only enables the remote control of the device but also unlocks many advanced options available only through the app.


Although Blueair 411 Auto is cylindrical, and the Xiaomi Mi 3h is rectangular, these two devices have almost identical airflow.

Blueair 411 Auto Vs Xiaomi Mi 3H - View from the top
Blueair and Xiaomi from the top view. Photo: / Milan Antonic

Both draw air in through the openings on the bottom part of the device, which is then filtered and exits through the openings on the top.


Concerning the warranty, I want to say the Blueair is a bit more generous as it comes with a 2-year warranty, while the Xiaomi comes with just a 1-year warranty.

Levoit Core 300 Vs Blueair 411 Auto Related comparisons

Filtration Technology

The first thing I would like to emphasize when comparing filtration technology is that Xiaomi Mi 3H uses a 3-stage filtration technology consisting of a nylon mesh pre-filter, True HEPA filter, and activated carbon filter. In contrast, the Blueair 411 Auto uses a 4-stage filtration technology consisting of a washable pre-filter, particle filter, carbon filter, and HEPASilent technology.

Blueair 411 Auto Vs Xiaomi Mi 3H - Filtration technology
Blueair Vs Xiaomi filtration technology compared. Photo: / Milan Antonic

HEPASilent technology is essentially an ionizer that is always active and cannot be turned off. But, please keep in mind that the Blueair 411 Auto is CARB certified, which means it doesn’t produce an unallowed amount of ozone and is safe to use.

I want to point out that having a True HEPA filter is a huge benefit of the Xiaomi over the Blueair, mainly because the HEPA filter is the most important filtration stage, and the True HEPA is prooved as more efficient than standard HEPA filters.

What’s more, Xiaomi uses a pellet-based carbon filter, which is also much more efficient than the fibrous filter coated with carbon as it is on Blueair.

However, the Blueair has its trump card, a washable pre-filter, which is also available in five different colors.

How To Replace Filters?

Since all the filters on these two air purifiers, except the washable pre-filter on Blueair, aren’t washable, you have to change them occasionally.

On the Blueair 411 Auto filter lasts on average about 6 months, while on Xiaomi Mi 3H, it lasts on average between 6 and 12 months.

How to replace Blueair 411 Auto filter? How to replace Xiaomi Mi 3H filter? Filter replacement

The replacing filter process is straightforward, and I explained it in detail in individual reviews, which you can see on the links below.

Noise Tests

The noise test is where Xiaomi showed why it is a top-notch air purifier. Due to the fact it has more fan speeds, and that has the ability to adjust the fan speed through the smart app manually, it was somehow expected that the Xiaomi will be quieter than the Blueair 411 Auto.

Blueair 411 Auto Vs Xiaomi Mi 3H - Noise test
I used a special noise measurement tool to test these two air purifiers’ noise levels. Photo: / Milan Antonic

Besides, the Xiaomi Mi 3H has a sleep mode, where it produces a sound of just 40.9 dBA, while the Blueair 411 Auto produces a sound of 41.6 dBA at its lowest speed

Product Noise Range (dBA)
Blueair 411 Auto 41.6 – 61.2 dBA
Xiaomi Mi 3H 40.9 – 65.4 dBA

In addition to all mentioned, the Xiaomi motor works more pleasant, especially at the max speed, on which Blueair is a bit too loud.

Performance Tests

The most interesting test in this comparison is the performance test, especially because Xiaomi covers much larger rooms than Blueair.

Blueair 411 Auto Vs Xiaomi Mi 3H - Performance tests
Blueair Vs Xiaomi performance compared. Photo: / Milan Antonic

Because of different room coverage, I have tested them in a few different tests to get more credible results and to make a more precise comparison of their performance. 

In addition to the tests that I will show below, I tested these two devices daily, and what I noticed and what I think is necessary to highlight is that Xiaomi has proven to be better at neutralizing bad odors.

320 sq. ft. Room Tests

In the first test, in a 320 sq. ft. room, these two devices have shown excellent results. 

The Xiaomi Mi 3H improved the air quality by about 95% in 60 minutes of operation, at max speed, while the Blueair 411 Auto improved the air quality by about 91% for the same time and in the same conditions.

Air Quality Improvement In 320 sq. ft. Room
Blueair 411 Auto
Xiaomi Mi 3H
0% 100%

320 sq. ft. Room

* Data measuring time is 60 minutes.

Other Tests

In addition to the previously mentioned tests, I tested the Blueair 411 Auto in a room size of 194 sq. ft., where for 60 minutes of work at max speed, it improved the air quality by about 94%, which is a remarkable result!

I tested Xiaomi Mi 3H in a room size of 560 sq. ft., in which this air purifier improved the air quality by about 90%, for 60 minutes, working at the max speed.

Overall, both, Blueair 411 Auto and Xiaomi Mi 3H have made fantastic results on performance tests and proven to be top air purifiers.

Operating Costs

Probably, many of you expected that the Blueair 411 Auto is a much smaller power consumer, as it uses a motor of just 10W, which is almost four times less than the 38W, which is the power of the Xiaomi Mi 3H motor.

Blueair 411 Auto Vs Xiaomi Mi 3H - Power usage
Blueair Vs Xiaomi motors compared. Photo: / Milan Antonic

This means that if you left these two devices to operate 24 a day, at max speed, for a month, your electricity bill would be increased by about $0.8 in the case of the Blueair 411 Auto and by about $3.4 in the case of Xiaomi

Product Wattage Range (W)
Blueair 411 Auto 1.9 – 9.1W
Xiaomi Mi 3H 0.9 – 39W

When we sum up the price of replacement filters and the power usage, and when we add to that the filter’s longevity, the Blueair 411 Auto is much cheaper for maintenance annually than the Xiaomi Mi 3H.

Which One Does It Better?

I think from the very beginning, this battle was evident.

Although the Blueair 411 Auto is much more affordable to maintain, and even though it performed pretty well in performance tests, I choose the Xiaomi Mi 3H as a better buying option and the winner in this battle.

Xiaomi Mi 3H has a much larger filter, uses a True HEPA filter, has a pellet-based carbon filter, has plenty of advanced options, and also made outstanding results in performance tests.

In essence, although the Xiaomi Mi 3H is a better choice to buy, you won’t make a mistake even if you opt for a Blueair 411 Auto. Personally, I would recommend Blueair for smaller rooms, in which it could fit better and be more beneficial than Xiaomi.

If you have any questions, do not hesitate to ask them in the comments box below.

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