Xiaomi Mi Air Purifier 2S: Trusted Review & Specs

It is one of those air purifiers that give no chance of complains in any department, but only in specs sheet. If you are in for a Xiaomi device, Xiaomi Mi Air Purifier 2S is the only air purifier you can have at the moment. Today, we have a chance to test the Xiaomi air purifier, and give an honest Xiaomi Mi Air Purifier 2S Review.

Xiaomi Mi 2S ranks B+ in our air purifier ranking list. We give the biggest and most thorough database of air purifier reviews in the world.

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• We do give honest reviews (both pros and cons) so anyone will guarantee to have the wisest choices.
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The Chinese Xiaomi is currently one of the biggest electronics corporations, presenting in more than 80 countries and regions around the world and have a leading foothold in many markets, mainly in Asia region like China, India or South-East Asia parts. However, in the United States, Xiaomi isn’t quite popular, and we need a Xiaomi Mi Air Purifier 2S Review to decide if we should use this air purifier or not.

Other Xiaomi’s Air Purifier Reviews: 

Xiaomi Mi Air Purifier 2S Price

Well, you maybe haven’t heard of this Xiaomi Mi 2S anywhere, and some people will even make mistake the air purifier with the smartphone Mi Mix 2S. Xiaomi added a charmer to their air purifier portfolio, and the Xiaomi Mi 2S will decide if they should invest in this field more or not.

The air purifier stays true to the company’s strategy: low-price device with high-end stuffs. In Xiaomi website, the tag of Xiaomi Mi 2S is $129, which sounds fair enough to have one without thinking carefully. It is certainly the best budget air purifier packed with so many smart features that we’ve only seen on devices with double its price.

Even though Xiaomi has been at the top in terms of market share, in the United States, it is just a newbie in air purifier industry. If you want higher-grade air filter, you should look for Medify MA-14 or Levoit Vital 100. Xiaomi Mi 2S’s price is also close to the Winix 5300-2 and Winix 5500-2, which are still the best Amazon’s Choice for performance in sub-$150.

Related post: Best air purifier 2023.

Xiaomi Mi Air Purifier 2S Design and Size

The design concept of Xiaomi Mi 2S is not new. We used to check air purifier with this classic cubic tower design, like in the Medify MA-40 or Winix AM90. The Xiaomi Mi 2S is the third-gen air purifier of this Chinese company, proven the effectiveness of this design.

One thing that really enhanced the design is its fully 360° air intake which can be found from all 4 faces of this air purifier. It gives the maximum air input for better air cleaning, and overall improve the bottom-to-top air flow system concept of Xiaomi Mi 2S.

In a nutshell, the air purifier is solid, has no sharp edges and feels good when using. Xiaomi Mi 2S has an average dimension with 20.5 inches in height and 9.4 inches in width.

The major distinctive element in the design is the OLED display on front of the device. You may don’t need the contribution of OLED in air purifier, but this is the best display screen you can look at right now.

Xiaomi Mi Air Purifier 2S weighs only 10 lbs, and you can lift it to anywhere easily.

Related post: Best air purifiers for bedroom.

Xiaomi Mi Air Purifier 2S Filters

With the knowledge of the quantity and quality of the air filters, as well as the air filter types, we can decide the performance of this air purifier product. In our today Xiaomi Mi Air Purifier 2S, we will have an all-in-one air filter, consisting of 3 different stages.

1. Pre-filter – The primary filter to trap large particles and floating matters like large dust, plant fibers, pollen.
2. EPA filter – It is quite like the popular HEPA filter that we widely know. The EPA filter is graded H11, which can filter more than 95% of any particles down to 0.3 microns, like fine dust, pet dander and other PM 2.5 particles.
3. Activated Carbon filter – Filters out formaldehyde, odors and harmful gases.

Xiaomi Mi 2S uses a triple-layer air filter, starting with a primary pre-filter. Made with polyethylene terephthalate, the outer layer can protect the main EPA filter from grease, acids, alkalis and most solvents. It also traps the large objects of pollutants, so your air filter can last longer.

The core of this air filtration system is a H11-grade EPA filter from Toray Industries, a corporation with nearly 100 years of making fibers, including of high-quality air filters. I believe this air purifier can filter out at least 95% of any particles as small as 0.3 microns.

I made a simple test for the Xiaomi Mi Air Purifier 2S, in a room of 150 square feet and under 1 hour. In the test, I also used the Airthreal APH260, InvisiClean Aura II and Hathaspace Smart True HEPA Air Purifier, so you can compare the performance of our today unit. The result, Xiaomi Mi 2S is the lowest performer, due to lower-quality air filter. Its efficiency is only 97% for trapping any particles down to 0.3 microns.

Xiaomi recommends to change the air filter after 3 to 6 months, depending on the frequency of use. The filter installment process is quite simple, and it is quite affordable, too.

Related post: Best air purifiers for allergies.

Xiaomi Mi Air Purifier 2S Room Coverage

The Xiaomi Mi 2S is suggested to use in a room of 400 square feet by the manufacturer, which is fantastic for an air purifier in this price range.

The ACH of Xiaomi Mi 2S is 2X to 4X. With this air changes per hour rating, the air purifier can clean your room every 15 minutes.

The CADR of Xiaomi Mi 2S is 180 cfm in general. For sub-$150 segment, such fan power is truly impressive, and can be better than a lot of air purifier brands.

Related post: Best large room air purifiers.

Xiaomi Mi Air Purifier 2S Sound

Xiaomi said that the noise from Xiaomi Mi 2S’s lowest setting is almost imperceptible. However, a budget air purifier with such fan power can’t keep the noise level as good as others designed mainly for bedrooms.

On lowest speed, I recorded the noise level to be 41 decibels (db), which is only like the library’s level. It is highly recommended to run the air purifier on low to keep it as silent as possible.

When you turn the device on highest speed, the noise level of Xiaomi Mi 2S can reach 70 decibels. Yes, 70 decibels for an air purifier with less than 200 cfm in CADR rating is quite unacceptable.

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Xiaomi Mi Air Purifier 2S Power Consumption

One of our most FAQs is “Do air purifiers use a lot of energy?” In fact, air purifier must be used for a long time to be efficient. And power consumption is one important criteria to review if this air purifier is good or not.

I am that person who care a lot about the energy bill, and that means I truly love air purifier with low power consumption. Equipped with Nidec motor from Japan, the Xiaomi Mi 2S is truly an energy saver, with rated power of only 4.8 watts on lowest. The highest power consumption of this device is just 29 watts, and you can enjoy using the air purifier 24/7 easily.

If you run the Xiaomi Mi 2S for at least 8 hours per day, you only pay from $2 to $10 each year.

Related post: Best air purifiers for pets.

Xiaomi Mi Air Purifier 2S Additional Features

As mentioned, Xiaomi Mi Air Purifier 2S shines outstandingly with the high-end additional features for a budget device. Introducing the OLED display, Xiaomi gives you everything you need for air quality in your home, from the current air quality index, the temperature and even the humidity level.

Xiaomi Mi 2S applies a high-precision laser sensor to detect any particles as small as 0.3 microns, and give you feedback on the OLED screen. Moreover, the Auto Mode can be enabled to adjust the fan automatically to match the environment’s need. However, I’ve heard a lot of negative reviews about the Auto Mode to be inaccurate, and Xiaomi Mi Air Purifier 2S automatically switch to Auto Mode. I will update the review later if I found any uncommon things happened in our testing unit.

This air purifier also has a sensor to check the ambient light, and it will adjust the brightness of its display based on the current light of your room. Xiaomi called it the Sleep Mode, and the Xiaomi Mi 2S can keep the setting on lowest speed, so that your sleep is not disturbed.

Like every device in the Xiaomi family, Xiaomi Mi Air Purifier 2S is a smart device, and it can be controlled via Amazon Alexa or Google Assistant. It can be connected with a smartphone app – the Mi Home App, so you can check any information about the air quality index, change the fan speed and set a timer to schedule the time off. It also notifies you when you need to change the air filter.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

Xiaomi Mi Air Purifier 2S Customer Service

Xiaomi is an international corporation, with global active customer service to help you with everything you have trouble.

For U.S users only, you can easily contact Xiaomi by live chat, which is available from 8 AM to 6 PM CST. Or you can call them via hotline at 833-942-6648, or email them at service.us@xiaomi.com. I am sorry I can’t write about the specific customer service’s line in every region, but you can check easily on Xiaomi website.

You must purchase air purifiers from Xiaomi authorized marketplace sellers, as Xiaomi doesn’t provide any return policy for their products. Just for your information, the Xiaomi air purifier isn’t registered to buy in the U.S, so you aren’t warranted from Xiaomi. Our below deal is only from a seller, and you need to verify it by yourself.

Our verdict

Xiaomi Mi Air Purifier 2S amazes you with the high-end additional features that we can only find from air purifiers with double the price. However, its performance rating is insufficient, due to the low-level EPA air filter inside. If you have serious allergies or asthma, you should think it twice before buying the Xiaomi air purifier.