Which Xiaomi Air Purifier Is Best to Buy in 2026? Comparison of 5 Models on Real-life Tests

Choosing a Xiaomi air purifier is not an easy task: the brand offers more than 10 models with different filters, performance and “chips”. Some devices are optimal for allergies, others for smokers, others cope with formaldehyde in new buildings. In this article, we analyzed the 5 most popular air cleaners Xiaomi (including Mi Air Purifier 4 Pro, Smartmi Air Purifier P1 and others), compared them by 7 key parameters and found out which model is better for specific tasks.

We're not going to go through the specifications of dry, but instead show how each model behaves in real-world conditions. 3H It loses 4 Pros in the dust fight, but it wins in the noise level at night. P1 his CADR 500 m3/h may be redundant for a standard "odnushki", but indispensable for a studio with an open kitchen. HEPA-filters before problems with connecting to Mi Home on old smartphones.

At the end of this article, we have a 5-step checklist that will help you make your choice in 2 minutes, even if you've never encountered Xiaomi, and for those who already use an air purifier, we've prepared a guide to extend the life of filters by 30% without extra costs.

1. Key selection criteria: what to look at first

Before comparing specific models, we’ll see which parameters are really important and which are marketing tricks, for example, many buyers focus on the color indicator of air quality, but it often shows inflated values to “scare” the user and make them turn on the device more often.

Here's what really matters:

• 🔹 CADR (Clean Air Delivery Rate - shows how many cubic meters of air the cleaner passes through itself per hour. For a bedroom of 15-20 m2, 200-300 m3 / h, for a living room of 30-40 m2, 400 m2 is needed+ m3/h.
• 🔹 Type of filter: HEPA (For example, the most common type of filters are from dust, allergens, coal (from smells, formaldehyde), antibacterial (optional). Budget models often put combined filters that are worse at specific tasks.
• 🔹 Noise level: up to 30 dB – almost silent (suitable for sleep), 30-50 dB – noticeable hum, above 50 dB – as a working vacuum cleaner.
• 🔹 Coverage: Manufacturers often overstate this parameter. The actual effective cleaning occurs at 60-70% of the declared area.
• 🔹 Smart features: Mi Home integration, voice control, automatic mode. Useful, but not critical - the main task of the cleaner is not "smartness", but cleaning.

One of the most common myths is that the more filters, the better. In practice, excess filtration layers only increase air resistance, which makes the device work louder and wears out faster. For example, the Mi Air Purifier 2S has only 3 layers of filtration, but it is more efficient than some 5-layer models.

⚠️ Note: If the characteristics are specified CADR 500 m3/h, but the device weighs less than 5 kg, most likely a marketing stunt.

2.TOP-5 air purifiers Xiaomi: comparative table

We selected 5 of Xiaomi’s most popular models (including the Smartmi sub-brand) and compared them on key parameters, based on independent lab tests and user reviews from 2023-2026.

Please note: Smartmi P1 The Mi Air Purifier 4 Pro is the same as the other two. CADR, But the first one's worth 2,000. ₽. The difference is that P1 thicker carbon filter (25 mm vs. 15 mm in 4 Pro), which is important for absorbing odors. If your apartment is often cooked or smoked, overpaying makes sense.

But the Mi Air Purifier 2S is the only model in the lineup that doesn't have a PM2.5 laser sensor, and instead uses an infrared sensor that's less accurate, which is critical if you want to track air quality in real time.

💡

The best bedroom is the Mi Air Purifier 3H, which is quieter than the rest at a minimum speed (30 dB) and consumes only 4.8 watts in sleep mode.

3.The best Xiaomi air purifier for allergies and asthmatics

If your goal is to fight dust, pollen or animal hair, pay attention to two parameters: class. HEPA-filter (not below) H12) Cheap models often let unfiltered air through the cracks, negating all cleaning.

From our TOP-5 for allergies suitable:

• 🌿 Mi Air Purifier 4 Pro — HEPA H13 It captures 99.97% of particles up to 0.3 microns (including pollen and mold spores) and has an Allergen mode that automatically increases power when small particles are detected.
• 🌿 Smartmi Air Purifier P1 — too HEPA H13, But with an extra antibacterial coating on the filter, which is useful if you have pets in the house.

An important caveat: both devices require regular filter replacement (every 6-12 months), otherwise the accumulated allergens will begin to return to the air. ₽, for P1 — 4 000 ₽.

If you have a budget, consider the Mi Air Purifier 3H with the HEPA H11, which is worse at handling the smallest particles, but still more efficient than most budget counterparts, and the main thing is not to turn it on at full power (at maximum speed, it lets some air past the filter due to high pressure).

⚠️ Attention: In models with an ionizer (e.g. Mi Air Purifier Pro H), this mode is better turned off. Ionization creates ozone, which can irritate the airways in asthmatics.

4 Which Xiaomi Cleaner Is Best for Kitchen and Scent Control

The kitchen is critical to the thickness of the carbon filter, which absorbs the smells of fried, burns and chemical fumes. Most Xiaomi models have a charcoal layer thinner than 15 mm, which is not enough for heavy loads.

The only models that do the job are:

• 🍳 Smartmi Air Purifier P1 — 25 mm thick carbon filter absorbed the smell of fried fish in 15-20 minutes (versus 40)+ minutes in other models).
• 🍳 Mi Air Purifier 4 Pro - carbon filter 15 mm, but with additional impregnation against formaldehyde. Suitable if the kitchen is new furniture or plastic windows (they emit harmful substances in the first months of the year).

Both models have a Turbo mode, which speeds up cleaning, but makes a lot of noise (60+ dB), only when no one is home, and a delayed start feature is also useful, so you can program cleaning for the night when the smells are no longer so noticeable.

The budget option is the Mi Air Purifier 3H, but its carbon filter is thinner (10 mm), so it can only cope with the strong smell of burning in 1-1.5 hours, but it can be placed next to the stove: the body can withstand temperatures up to 50 ° C (other models have a limit of 40 ° C).

💡

To make the carbon filter last longer, once a month, take the cleaner out on the balcony for 2-3 hours. Coal is recharged from sunlight and fresh air.

5. Hidden shortcomings of air cleaners Xiaomi: what do not write in reviews

Even the best Xiaomi models have weaknesses that the manufacturer doesn’t mention, and we’ve collected the most common problems based on user tests and complaints:

• 🔌 Power problems: Mi Air Purifier 4 Pro and Smartmi P1 When the voltages surge, they can turn off and not turn back on.
• 📱 Unstable work with Mi Home: On Android 10 and below, the app may not see the cleaner. Helps to reset the device through the Wi-Fi button (hold 5 seconds).
• 🔄 Fast wear of filters: In regions with high dust content (for example, near construction sites), filters become unusable in 3-4 months instead of the declared 12.
• 🔊 Noise at medium speed: In Mi Air Purifier 3H 4 Lite at 2-3 speeds there is a vibrational hum due to imperfect fan balancing.

Another unpleasant thing is that in models with a laser sensor PM2.5 (4 Pro, P1), the accuracy of measurements decreases over time. After 2-3 years, the sensor can show inflated values, causing the device to operate at higher speeds without having to, the solution is to wipe the sensor once a year with a cotton swab dipped in alcohol.

Many users also complain about the inconvenient filter replacement system in the Smartmi P1. To remove the lid, you need to press two latches at the same time, which is difficult to do with one hand. In the Mi Air Purifier 4 Pro, the lid opens easier - just pull the notch.

Make sure the model supports your region in Mi Home|Check for original filters on sale|Evaluate the noise level at minimum speed (should be ≤35 dB)|See if there is an adapter for your socket-->

6. How to save on filters: life hacks and alternatives

Original filters for Xiaomi are expensive: from 2,500 to 4,000 ₽ But there are ways to cut costs without sacrificing health:

1. Vacuum for filter: Once a month, vacuum carefully HEPA-The filter (not coal!) is at minimum power, and it removes the large dust and extends the life of the filter by 20 to 30 percent%.
2. Third-party analogues: Filters from Beurer or Levoit brands are often sizeable and cost 30 percent less, and the main thing is to check compatibility with the model.
3. Homemade cleanup: A mesh prefilter (sold in hardware stores) can be installed in front of the main filter, which traps large dust and hair, reducing the load on HEPA.

Important: Don't wash. HEPA-It destroys the structure of the filter, and it stops trapping small particles. You can't wash the carbon filter either, the water washes out the activated carbon.

If you use a cleaner in high humidity (like a bathtub), you have to change the filters more often, moisture promotes bacteria on the filter, which can lead to an unpleasant odor, in which case it helps to dry the filter regularly with a hair dryer (cold air!) every 2 weeks.

💡

Buy on AliExpress universal prefilter of nonwoven material (worth it) ~300 ₽). It can be washed and used for up to 6 months.

7. FAQ: Answers to Frequent Questions