How to Use Xiaomi Air Purifier: A Complete Guide with Expert Tips

Xiaomi’s air purifiers have long been the standard of quality in smart home gadgets, and these compact devices not only fight dust, animal hair and allergens, but also integrate into the Mi Home ecosystem to allow remote climate control. However, many users face typical problems ranging from incorrect filter installation to Wi-Fi connection errors. This article will help you understand everything from first onset to extended life of the device.

We have analyzed the instructions for Mi Air Purifier models. 3/3H/4/4 Lite/Pro, We took into account the feedback of the owners and added expert advice on optimizing work in Russian realities (where air quality often leaves much to be desired). We will pay special attention to hidden functions that are not written about in official manuals, but which can save you money - for example, how to reset the filter counter without replacing it or adjust automatic mode for a specific room.

If you've just unpacked a box with the Mi logo, or you've been using a cleaner for a month, but it's working "somewhat weirdly," here's the answers. And for those who are planning to buy, we've compared the key models in the table and told you what to look for when choosing.

Preparation for the first turn on: what to do before launch

Before you connect the cleaner to the socket, follow a few mandatory steps, and failure to comply with these rules can lead to improper operation of the sensors or even breakage of the device.

First, unpack the device in the room where it's going to work (PM2.5, TVOC) They're calibrated to the microclimate of the room in the first hours of work, and if you turn on the kitchen cleaner and then move it to the bedroom, it's going to show incorrect data.

Secondly, make sure the filter is installed correctly. 3/4 It's fixed by a magnetic latch, so if you hear a click, it's okay. In the Pro versions, check the sealing gum, which has to fit tightly to the body, or some of the air will pass by the filter.

• 📦 Remove the protective film from the filter (it is often forgotten to remove!) It prevents dust from entering during transportation, but if left, the cleaner will work idle".
• 🔌 Check the voltage. All Xiaomi models are designed to 220V/50Hz, but if you bought the device in China (for example, on AliExpress), you may need an adapter.
• 📱 Prepare your smartphone. You'll need the Mi Home app to set up (at least 6.0) and remove the older versions, which may not support the new models.

The critical mistake of the newcomers is to turn on the unfiltered cleaner "on trial," and even 5 minutes of operation in this mode leads to dust entering the engine, which reduces the life of the device by 20 to 30 percent. If you've already done this, make sure to vacuum the internal grilles before installing the filter.

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If the room has sources of strong odors (paint, varnish, new furniture), let the cleaner work 2-3 hours at maximum speed with the windows closed (TVOC).

2. Step-by-step instructions: how to turn on and configure Xiaomi cleaner

The first launch process takes no more than 10 minutes, if you follow a clear algorithm, and we break it down into stages, taking into account the nuances for different models.

Step 1: Physical connection

1. Install the filter (how to check the correct installation – see the section above).
2. Connect the power cord to the cleaner, then to the socket. 3/3H The power button is on the top panel, in 4/Pro — sensory.
3. Press the power button (or touch the sensor) and hold for 3 seconds until the indicator lights up.

Step 2: Connect to Wi-Fi

This is a very difficult step, and it's important that the cleaner only supports 2.4 GHz networks, and if your router is running on 5 GHz, create a separate network or enable compatibility.

Instructions for the Mi Home app:

1. Open the application and click "Add device" (icon "+" top-right).
2. Select the category "Air Purifier" and the specific model.
3. Press "Connect Wi-Fi" and follow the prompts. The device will sound and flash the indicator.
4. Enter your network password. If the connection is not established, try to disable it. VPN or change the type of encryption to WPA2-PSK.

Step 3: Calibration of sensors

Once connected, the cleaner will automatically run the air test, which takes 3-5 minutes. Don't interrupt it.

• 🚪 Close the windows and doors in the room.
• 🚫 Do not smoke, use aerosols or fresheners.
• 📵 Do not bring sources of electromagnetic interference (microwaves, wireless charging) to the device).

I installed a filter and took the protective film.|

I've connected it to the 220B outlet.|

Downloaded Mi Home latest version|

Prepared a 2.4 GHz Wi-Fi network|

Closed the windows in the room.-->

3. Cleaner control: buttons, app and voice commands

Xiaomi has three ways of controlling: mechanical buttons, a mobile app, and voice assistants, and let's take a look at each with examples.

1. Control panel on the body

In the Mi Air Purifier models 3/3H There is a physical button and an LED indicator:

• One tap is on/off.
• Hold 3 seconds - switching modes (Auto/Sleep/Favorite).
• Double press – lock the panel (from children).

V 4/Pro instead of a button, a touch screen with swipes:

• 👆 Swipe up/down - adjusting the fan speed.
• 👉 Swipe to the right - switching modes.
• 🔄 Circular movement – locking the screen.

2.Appendix Mi Home

Extended settings are available here:

• 📊 Air quality schedules for day/week/month.
• ⚙️ Automatic mode setting: you can set a target level PM2.5 (35 μg/m3 for allergies).
• 🔔 Notifications of filter replacement or exceeding the norm CO₂.
• 🕒 Timers and schedules: for example, turn on the cleaner an hour before you return home.

Voice control

Xiaomi cleaners are compatible with Alice (Yandex), Google Assistant and Siri (via HomeKit).

• "Alice, turn on the air purifier at maximum power."
• "OK Google, set up a sleep mode in the cleaner."
• "Ciri, show me the level. PM2.5 In the living room" (requires settings through Home Assistant).

⚠️ Warning: If the cleaner doesn't respond to commands from the app, check: Is it connected to the same Wi-Fi network as your smartphone? → Settings of the device → Software Update?: Has Xiaomi servers gone down (check status.mi.com).

4. Replacement of the filter: when and how to do it correctly

The filter is the heart of the cleaner, and its condition affects 90% of the efficiency of the device, the manufacturer recommends changing it every 6-12 months, but in Russian conditions (with high dust levels and seasonal fluctuations in humidity), this period is often shortened.

Signs that the filter should be replaced:

• 🌫️ The device is running at maximum power, but the indicators PM2.5 not improving.
• 💨 There was an unpleasant smell when working (especially in the blowing mode).
• 📉 Mi Home app has a notification (even if the visual filter looks clean).
• 🔊 Increased noise at low speeds (clogged filter creates additional load on the fan).

Step-by-step instructions for replacement:

1. Disconnect the cleaner from the network.
2. Open the top cover (in models) 3/4 — Pull the notch, in Pro - press the latches on the side).
3. Remove the old filter. Don't shake it, it'll blow up the dust!
4. Install a new filter by combining the arrows on the housing and the filter (indicate the direction of the airflow).
5. Close the lid before you click.
6. Turn on the device and reset the filter counter in the application (Settings) → Filter reset).

⚠️ Warning: Don't buy "no-name" filters in markets! in 2023 lab ROSQUALITY I tested the fakes and found out they missed up to 40% PM2.5 Xiaomi's original filters have a hologram on the packaging and QR-authentication.

How to save on filters?

• 🧹 Cleaning with a vacuum cleaner: once a month, you can vacuum the outer layer of the filter carefully (without touching the coal layer!) This will prolong its life by 10-15%.
• ☀️ Drying: If the filter is damp (e.g. in the bathroom), put it on the battery for 12 hours.
• 🔄 Buy on stock: watch out for sales on AliExpress (official Xiaomi stores) or in SberMegaMarket. prices for original filters fall to 1,200-1,500 ₽ 2-3 times a year.

5. Working modes: which to choose for your room

Xiaomi cleaners offer 3-5 modes of operation, but few people know how to use them correctly. We tested each mode in real conditions (apartment 50 m2, Moscow, winter 2026) and found out:

1. Automatic mode (Auto)

The most efficient one for most users, the device itself adjusts the fan speed from the sensor data.

• 📈 Reacts to PM2.5, TVOC and) CO₂.
• 🕒 At night, noise is automatically reduced to 30 dB.
• ⚠️ Cons: may switch speeds too often if the room is drafty.

2. Sleep mode (Sleep)

Optimized for use at night:

• 🌙 Noise not exceeding 27 dB (silent whisper).
• 💡 The display lights are off.
• 🌬️ Fan speed is fixed at the minimum level.

Important: This regimen is not suitable for allergy sufferers – it does not cope with sharp jumps in pollution (for example, if someone smoked in the next room).

3.Favourite (Favourite)

It allows you to save your favorite settings.

• 🏠 For the living room: speed 50%, target PM2.5 = 20 μg³.
• 🍳 Kitchen speed: 80%, timer 1 hour after cooking.

4. Turbo mode (Turbo)

Maximum power for quick cleaning (e.g. after repair or general cleaning) is not recommended for more than 30 minutes, which reduces engine life.

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For allergies and asthmatics, an automatic regimen with a target is optimal. PM2.5 ≤ 15 μg/m3 This value is recommended by WHO for sensitive groups.

6 Common Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes that reduce the efficiency of the cleaner or lead to breakdowns.-5 problems and solutions.

Error 1: The device shows a high level of PM2.5, But the air seems clean.

Causes and solutions:

• 🔍 The sensor is dirty. Wipe the grille around the sensor with a cotton swab dipped in alcohol.
• 🌬️ Close the windows for 10 minutes and restart the test.
• 📍 The sensor should be at a height of 0.5-1.5 m from the floor and 1 m from the walls.

Error 2: The cleaner makes a lot of noise at low speeds

Probable reasons:

• 🔧 The fan is out of balance. Turn it off, tilt it down 45.° And back again, it will throw off the possible skewing of the blades.
• 🧹 Dust in the engine. Requires disassembly and cleaning (see section "Repairs").
• 🏗️ Bearing defect. If the noise has not disappeared, contact the service (the warranty of Xiaomi in Russia - 12 months).

Error 3: Not connected to Wi-Fi

Algorithm of action:

1. Reboot the router.
2. In the router settings, disable the function "Smart Connect" (it interferes with the connection of devices at 2.4 GHz).
3. Reset the cleaner to factory settings: Hold the power button for 10 seconds until the beep.
4. If nothing helps, update your firmware through Mi Home manually (firmware files are available at mi-firmware.com).

Error 4: Filter goes down quickly (change every 3 months)

What to check:

• 🏡 If the room is larger than 35 m2, you need a more powerful cleaner (for example, Mi Air Purifier Pro).
• 🐕 Animals.Wool and dandruff clog the filter 2 times faster.Use Turbo mode 1 time per week.
• 🚬 Smoking in the room. Resins settle on the coal layer and block it. The solution is a separate cleaner for the smoking zone.

Error 5: The app shows "Offline"

Methods of communication recovery:

• 📶 Check if your Wi-Fi password has changed.
• 🔄 Reconnect the device to Mi Home (Settings) → Reconnect).
• 🌍 If you use Home Assistant, upgrade Xiaomi Miio integration.
• 📵 In extreme cases, reset the purifier settings (power button 10 seconds).

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If the cleaner has become worse to cope with smells, try changing places. HEPA And the carbon layers of the filter, if they're removable, sometimes the carbon layer wears out faster, and this trick extends the life of the filter by 1-2 months.

7. Hidden functions and life hacks for advanced users

The official instructions don’t reveal all the features of Xiaomi cleaners, and here are some of the chips we found in firmware and tests:

1. Manual control of fan speed

In Auto mode, the speed is adjusted automatically, but you can fix it:

1. Switch to Favourite mode.
2. Set the speed you want (e.g., 60%).
3. Return to Auto – the device will use your speed as baseline.

Resetting the filter counter without replacement

If you have cleaned the filter (see section 4), but the application still needs to be replaced:

1. Open Mi Home and select your cleaner.
2. Go to Settings. → Filter reset.
3. Click "Confirm" (you will have to enter the code from the device).

Attention: abuse of this method leads to engine overheating!

3.Integration with a smart home

Xiaomi cleaners can be linked to other devices:

• 🔄 Automation with a robot vacuum cleaner: start the cleaner after cleaning.
• 🌡️ Synchronization with the sensor CO₂: include if exceeding 800 ppm.
• 🚪 Work with window sensors: turn off the cleaner when ventilation.

Use Home Assistant or Yandex Alice with the skill "Smart Home".

4. Performance test

To check how well the cleaner works:

1. Close the windows and doors.
2. Light 1-2 aromatic sticks (they emit) PM2.5).
3. Turn on the purifier on Turbo and note the time it took PM2.5 drop from 200 to 20 μg/m³.

The Mi Air Purifier 4 is 15-20 minutes, and if it's longer, it's time to change the filter.

5. Electricity savings

The cleaner consumes between 4 and 50 watts depending on the regimen, to reduce costs:

FAQ: Answers to Frequent Questions