How to set up Xiaomi Smartmi Air Humidifier humidifier: the full guide 2026

The Xiaomi Smartmi Air Humidifier is one of the most popular smart home devices, combining efficiency, compactness and integration with the Mi Home ecosystem. However, even a device as simple as this requires the right setup to run at full capacity. Many users face problems ranging from incorrect Wi-Fi connection to incorrectly selected humidification mode, which leads to water overrun or insufficient efficiency.

In this article, we will discuss all the stages of settings, from the first turn on to fine calibration of parameters through the application, you will learn how to synchronize the humidifier with other Xiaomi devices (for example, temperature sensors), configure automatic scenarios and avoid typical errors that shorten the life of the device, and pay special attention to hidden functions that are not written about in the official instructions, but can significantly improve the microclimate in your home.

If you've just unpacked your device or you've been using it for a while, but you want to optimize your device, this guide is for you. Why the humidifier doesn’t turn on through the app, how to reset it to factory settings, and what to do if it constantly shows an error E1 or E2.

1. Preparation of the humidifier for the first inclusion

Before connecting Smartmi Air Humidifier to a network or application, several mandatory steps must be taken, and neglecting them can cause malfunctions or even a device to break down.

First, thoroughly wash the water tank. Although the device is new, there may be dust particles or production oils inside. Use a soft sponge and warm water, aggressive detergents will damage the plastic. Pay special attention to the ultrasonic membrane (which is located at the bottom of the tank): it can not be rubbed with hard brushes or scrapes.

Next, check the package. The box should have:

• 📦 The humidifier with the tank itself
• 🔌 Power adapter (usually) 24V, 1.5A)
• 📄 Instructions in Chinese/English
• 🔄 Filter (in some models, such as Smartmi Air Humidifier 2, the filter is sold separately)

If the filter is not included, you need to buy it, without it, the device will spray with water microparticles of scale and bacteria. PMF01 or PMF02 (model-wise).

⚠️ Warning: Never use distilled water in a Xiaomi humidifier. It does not contain the minerals that are necessary for the stable operation of the ultrasonic membrane. The best option is boiled or filtered water with a hardness of no more than 5 mg-eq / l.

Wash the tank with warm water|Check the completeness|Install a filter (if any)|Pour water to the maximum mark|Connect the power adapter-->

2. Connect to the Mi Home application: step-by-step instructions

The Smartmi Air Humidifier is controlled via the Mi Home app (or Xiaomi Home in newer versions), and without it, you can only turn on the device with a button on the case, without all the smart features.

First, install the app on your smartphone (available for Android and iOS) and after you sign up or log in to your account:

1. Click + → Add the device in the upper right corner.
2. Select the category Smart Home → Humidifier.
3. Make sure the humidifier is plugged into the socket and flashes a blue indicator (connection waiting mode).
4. Confirm the addition of the device in the application and wait for the beep.

If the humidifier is not present, check:

• 📶 Is the smartphone and device on the same Wi-Fi network (2.4 GHz only!).
• 🔋 Is there enough charge on the phone (the connection process can take up to 2 minutes).
• 🔄 Have you rebooted your router (sometimes resetting your network helps).

Once you've successfully connected, the device will appear on the list, and you can now start setting the settings, and if the humidifier never connects, try resetting it to factory settings, and hold the power button on the case for 5-10 seconds until the light flashes quickly.

Mi Home (classic)|Xiaomi Home (New)|I don't know.|Not using.-->

3. Basic settings in the Mi Home app

Once connected, open the humidifier card in the app, and there are 4 key sections available:

1. The main screen is the current humidity, temperature and control.
2. Modes - the choice of preliminary settings.
3. The settings are fine calibration.
4. Automation is the creation of scripts.

The main screen displays:

• 🌡️ Current humidity and temperature (if connected to the sensor Xiaomi Temperature & Humidity Sensor).
• 💧 Water level in the tank (percentage).
• ⚙️ On/off buttons and intensity adjustments.

In the Mode section, 3 standard profiles are available:

In Settings, you can:

• 📊 Change the target humidity level (30 to 80%).
• 🔄 Turn on/off automatic shutdown in the absence of water.
• 🌙 Set a schedule (for example, turn off the device during the day).
• 🔔 Turn off the sound signals (useful for bedrooms).

⚠️ Note: If you use a humidifier in an air-conditioned room, set a humidity target of no more than 50%. Higher values can lead to condensation on walls and furniture.

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To keep the humidifier quiet, put it on a soft substrate (like a silicone mat) that will reduce vibration and noise from the ultrasonic membrane.

4. Sync with other Xiaomi devices

One of the main advantages of Smartmi Air Humidifier is the ability to integrate with other Xiaomi gadgets through automation.

• 🌡️ Automatic humidifier activation when Xiaomi Temperature & Humidity Sensor shows humidity below 40%.
• 🚪 Disable the device when you open the window (if you have a Xiaomi sensor) Door/Window Sensor).
• 🕒 Enabling the "Sleep" mode on a schedule (for example, at 23:00).

To create automation:

1. Open the Automation tab in the Mi Home app.
2. Click + → Add automation.
3. Select a condition (e.g. Humidity < 40%).
4. Add action: Include humidifier → Auto mode".
5. Save the script.

Important: for automation to work properly, the humidifier and sensors must be connected to the same region in the application (for example, "China" or "Russia").

You can also control the humidifier via Alice (if connected to Yandex.Station) or Google Assistant.

1. In the Mi Home app, go to the humidifier settings.
2. Select Voice Management → Connect to Yandex/Google.
3. Follow the authorization instructions.

5. Care and maintenance: how to extend the service life

Even the most reliable device requires regular maintenance.

• 🚰 Weekly cleaning of the tank and base from scale.
• 🔄 Replace the filter every 2-3 months (or more often if the water is hard).
• 💧 Using special means to clean ultrasonic humidifiers (for example, Xiaomi Air Humidifier Cleaner).

For cleaning:

1. Disconnect the device from the network.
2. Pour the water and disassemble the humidifier (remove the tank and filter).
3. Wash all parts with warm water with the addition of vinegar (1:1) to remove scale.
4. Wipe the ultrasonic membrane with a soft napkin (do not use abrasives!).
5. Dry all the details carefully before assembly.

If you have a white coating on the membrane, it's a sign that you're using too hard water.

• Clean the membrane with a special remedy or citric acid (1 tsp. per 100 ml of water).
• Use distilled water in a mixture with ordinary (1:1).

⚠️ Note: If the humidifier started to make an unusual noise (screaming, crackling) or stopped spraying steam, most likely, the membrane was clogged with scale. In this case, cleaning may not help - you will need to replace the membrane (contact the Xiaomi service center).

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Regular cleaning of the humidifier not only prolongs its life, but also prevents the reproduction of bacteria (such as legionella) that can cause respiratory diseases.

6. Common errors and their solution

Even with the right setup, users face problems. Consider the most common:

If the humidifier does not respond to commands from the application, but works from a button on the body:

• 📵 Check your internet connection (the device must be online).
• 🔄 Reboot the router.
• 📱 Reinstall the Mi Home app.

If after all the manipulations the problem remains, try to update the firmware of the humidifier:

1. Open the device card in Mi Home.
2. Go to Settings → Update firmware.
3. If a new version is available, click Update.

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If the humidifier is constantly showing an error E1, Even though there's water, try to lift the tank slightly and put it back in place. Sometimes the level sensor contacts oxidize and don't work well.

7. Optimization of work: tips for different rooms

The efficiency of the humidifier depends not only on its settings, but also on the characteristics of the room.

Bedroom:

• 🛏️ Use Sleep Mode or set your target humidity to 45–50%.
• 📱 Place the humidifier at least 1 meter from the bed so that the steam does not fall on the bed.
• 🕒 Set the automation to turn off 1 hour before waking up (so that the air has time to ventilate).

Children's room:

• 👶 Keep humidity at 50-60% (optimum for the child’s airways).
• 🚫 Do not place a humidifier next to toys or books - they can get damp.
• 🧼 Clean the tank every 3 days (children are more sensitive to bacteria).

Office or workplace:

• 💻 Place the humidifier next to the computer, but not closer than 50 cm (the steam should not fall on the equipment).
• 🌿 Add 2-3 drops of essential oil (such as eucalyptus) to improve concentration.
• ⏳ Turn on the device for 20-30 minutes every hour to avoid overhydration.

Greenhouse or room with plants:

• 🌱 Increase the target humidity to 60-70% (most tropical plants prefer this level).
• 💦 Use High Mode in the morning and evening when plants are more active in absorbing moisture.
• 🚿 Once a week, wipe the leaves of plants with a wet cloth - this will increase the effect of moisturizing.

Bedroom.|Childish|Living room|Cabinet|Kitchen.|Another option-->

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