How to clean the air humidifier Xiaomi Mijia: full instructions with photos and life hacks

The Xiaomi Mijia air humidifier has become a hit with smart home appliances — compact, quiet and integrated into the Mi Home ecosystem. But even the most advanced device requires regular maintenance: scale on the heating element, bacteria in the tank and contaminated filters not only reduce efficiency, but can also be harmful to health. In this article, you will find a step-by-step manual for cleaning all Mijia models (including Smartmiporative Evaporative Humidifier and Mijia Air Humidifier Pro), as well as a list of errors that allow 90% of users.

We'll take a look at not only the standard washing procedure, but also how to remove persistent limestone plaque, disinfect ultrasonic membrane and extend the life of the device. And you'll also learn which detergents you absolutely can't use, which can cause humidity sensors to break down. If your humidifier starts to emit an unpleasant odor or sprays steam worse, this article is for you.

1.Preparation for cleaning: what will be needed and how to avoid breakage

Before you start cleaning, disconnect the humidifier from the mains and let it cool — this rule applies to all models, including the Mijia Air Humidifier 2 with a warm steam function. Working with hot parts is not only dangerous, but also fraught with damage to plastic elements.

• 🧼 Soft sponge or microfiber cloth - hard brushes scratch the inner surfaces.
• 🧪 Vinegar 9% or citric acid – to remove scale (do not use soda or abrasive powders!).
• 🧴 Special means for humidifiers (for example, Ballu Cleaner) or hydrogen peroxide 3% - for disinfection.
• 🔧 Small brush (fit tooth) - for cleaning hard-to-reach places, for example, a sprayer.
• 💧 Distilled or filtered water – for rinsing after cleaning.

Pay special attention to the type of water you use in the humidifier. Hard tap water is the main enemy of the device: it leaves limestone plaque on the ultrasonic membrane and reduces the life of the device by 30-40%. If you have high salt water in your region, pour 1 part vinegar into 3 parts of water into the tank and turn the device on for 30 minutes in maximum spray mode - this will help dissolve the already formed scale.

⚠️ Warning: Never use chlorine products (like White) or aromatic oils to clean Xiaomi Mijia. Chlorine corrodes plastic and rubber seals, and oils clog the sprayer and can cause allergies when sprayed.

2. Disassembly of the humidifier: step-by-step instructions with a photo

The design of the Xiaomi Mijia humidifier is designed so that the user can easily disassemble and clean all the key elements. However, there are nuances: for example, in the Smartmi Evaporative Humidifier model, the filter is attached differently from the classic Mijia Air Humidifier.

1. Remove the top cover of the tank (pull up)

2. Remove the water tank (press the retainer button)

3. disconnect the base with the sprayer (turn counterclockwise)

4. Remove the filter (if any) and the ultrasonic membrane

5 Remove the cover from the control unit (carefully screwdriver)-->

The photos below show the disassembly process for the Mijia Air Humidifier 2 (relevant to other versions with minor changes):

[Here must be photographs with the captions: (1) Removal of the lid; (2) Removal of the reservoir; (3) Removal of the base; (4) Dismounting of the membrane]

If your humidifier is equipped with a removable filter (as in the Smartmi Evaporative Humidifier), remove it carefully - the filter material can crumble when pressed hard. In models without a removable filter (for example, the Mijia Air Humidifier Lite), only the ultrasonic membrane and the tank can be cleaned.

⚠️ Attention: Don't put too much effort into disconnecting the base from the sprayer! In Mijia Air Humidifier Pro models, it's fixed by magnets, not latches. A sharp movement can damage the humidity sensor contacts.

3. Tanker cleaning and scale removal: 3 proven methods

The water tank is the heart of the humidifier, and that's where the most plaque accumulates, and the lime deposits not only reduce the volume of water, but also become a breeding ground for bacteria, and we tested three methods of cleaning, from the most gentle to the most heavy artillery for neglected cases:

For ultrasonic humidifiers (all Mijia models except evaporative ones), mechanical cleaning with metal brushes or scrapers is strictly prohibited, which will damage the membrane.

1. Pour the selected solution into the tank (for example, vinegar with water).
2. Turn on the device for 10-15 minutes in maximum spray mode - this will help the solution to penetrate into hard-to-reach places.
3. Leave the solution inside for 30 to 60 minutes, then thoroughly rinse the tank with running water.
4. Wipe the inner walls with a soft sponge soaked in the same solution.

💡

If you have a smell after cleaning with vinegar, pour water into the tank with 1 tsp. soda for 10 minutes, then rinse. Soda neutralizes acetic acid.

4. Cleaning the ultrasonic membrane and sprayer: why it is critical

The ultrasonic membrane is the most delicate element in the Xiaomi Mijia humidifier, which converts water into fine vapor, and even microscopic deposits on its surface reduce performance by 20 to 25 percent. In Mijia Air Humidifier Pro models, the membrane is integrated into the base, and in basic versions it can be removed for cleaning.

To clean the membrane:

1. Wet the cotton swab or soft cloth in a solution of vinegar (1:1 with water).
2. Gently wipe the surface of the membrane without pressure - it is fragile!
3. For a sprayer (holes through which steam comes out), use a toothbrush soaked in the same solution.
4. Wash the membrane and sprayer with distilled water - this will prevent the re-formation of scale.

If the membrane is heavily contaminated (for example, after using hard water), you can soak it in a solution of citric acid for 10-15 minutes. But remember: frequent deep cleaning reduces the life of the membrane. The optimal frequency is 1 time every 2-3 weeks for daily use.

5. Disinfection of the humidifier: how to kill bacteria and eliminate the smell

Even if you wash your humidifier regularly, bacteria and fungi can multiply inside, especially if the device has been standing with water for a long time, signs of infection: unpleasant smell, cloudy water in the tank or green plaque on the walls.

• 🦠 Hydrogen peroxide 3% -- put it in a tank for 30 minutes, then rinse it. Kills 99% of bacteria.
• 🍋 Citric acid solution (2 tbsp. l. per 1 liter of water) - disinfects and removes the smell.
• 🧪 Special humidifier tablets (e.g. Boneco Cleaning Tablets) – comfortable and safe.

For models with an air ionizer (for example, Mijia Air Humidifier Pro) after disinfection, you need to rinse the tank 2-3 times - residues of chemical agents can damage the ionization plate.

If the smell persists after cleaning, check:

• 🔍 The filter may need to be replaced (the filter life in Smartmi Evaporative Humidifier is up to 3 months).
• 💧 Water quality – try using distilled water for a week.
• 🧽 Hard-to-reach places - sometimes dirt accumulates under rubber seals.

💡

After disinfection, always dry the humidifier in disassembled form for at least 2 hours. A humid environment is an ideal condition for the reproduction of bacteria.

6. Cleaning filters: when to change and how to extend the service life

Not all Xiaomi Mijia models have interchangeable filters, but if your humidifier is one of them (for example, Smartmi Evaporative Humidifier or Mijia Air Humidifier Pro), cleaning the filter is just as important as washing the tank. A clogged filter reduces performance by 30-50% and can cause a fan to break.

How to clean the filter:

1. Remove the filter from the device (in Smartmi models it is under the lid at the base).
2. Vacuum the filter at minimum power to remove dust.
3. Wash it under cool running water (hot water deforms the filter material).
4. Soak the filter in a vinegar solution (1:3 with water) for 10-15 minutes for disinfection.
5. Dry the filter thoroughly in the air (do not use a hair dryer or battery!).

The service life of the filter depends on the intensity of use:

• 🕒 Daily use – replacement every 2-3 months.
• 🕒 Periodic use – replacement every 4-6 months.

In models without a replaceable filter (for example, Mijia Air Humidifier Lite), the role of the filter is performed by an ultrasonic membrane and a spray mesh - we have discussed their cleaning in the previous sections.

⚠️ Warning: Never wash the filter in the washing machine or dry in the microwave! this destroys its structure and can lead to fire.

7. Frequent mistakes when cleaning Xiaomi Mijia moisturiser

Even experienced users sometimes make mistakes that lead to a break in the humidifier. TOP-5 The most common mistakes and explained what they lead to:

1. Using hard water → Quick scale formation on the membrane and its failure. Solution: use distilled or filtered water.
2. Metal brush cleaning → Scratches on plastic and membrane damage. Solution: soft sponges and rags only.
3. Drying the moisturiser in assembled form → Bacterial reproduction in a closed space. Solution: dry all the parts separately.
4. Ignoring disinfection → Mold and bad smell, solution: disinfect once a month.
5. Independent disassembly of the control unit → Damage to the humidity sensors. Solution: don't disassemble the electronic part without skill.

Another common mistake is to store a water humidifier, and if you don't plan to use the device for more than a week, make sure to drain the water and dry all the parts, otherwise you'll have black mold on the walls of the tank that's going to be extremely difficult to remove.

8 How often to clean the Xiaomi Mijia moisturiser: a care schedule

The frequency of treatment depends on the intensity of use and the hardness of the water, and we have created a universal care schedule that is suitable for all Mijia models:

If you use aromatic capsules (for example, for models with aromatherapy function), cleaning the tank and membrane should be carried out 2 times more often - essential oils settle on parts and clog the sprayer.

💡

Follow the clean tank rule: if the water in the humidifier has been standing for more than a day, drain it and rinse the tank, which will prevent bacteria from multiplying and plaque formation.

FAQ: Answers to Frequent Questions