Xiaomi's humidifier is an indispensable tool in the fight against dry air, especially during the heating season. But even the most advanced equipment requires regular maintenance. If you ignore cleaning, scale builds up inside the tank, bacteria multiply, and mucus or black mold spots appear on the walls, which not only spoils the appearance of the device, but also turns it into a source of unpleasant odor and a potential health threat.
In this article, we’ll look at how to clean a Xiaomi humidifier of any model, from the budget Mi Air Humidifier to the premium Smartmi Air Humidifier 2. You’ll learn what tools to use safely, how to remove persistent contaminants without damaging plastic, and why cleaning an ultrasonic membrane with alcohol or vinegar can permanently incapacitate the device, and we’ll give you recommendations on the frequency of service and how to avoid errors that shorten the life of the equipment.
Why Xiaomi Humidifier Should Be Cleaned Regularly
Many users only clean a device when it starts to smell bad or stops producing steam, but the consequences of a neglected state can be more serious:
- 🦠 Bacteria reproduction: The humid environment inside the tank is ideal for legionella, staphylococci and other microorganisms, and when they work, they spread through the vapor room.
- 🧪 Scale on heating elements: Hard water leaves a limestone plaque that reduces the efficiency of the ultrasonic membrane and can lead to overheating.
- 🍄 Mold on the walls: Black or green spots not only spoil the view, but also emit spores that are dangerous for allergic and asthmatics.
- 🚨 Device failure: Clogged filters and nozzles lead to increased engine load, which reduces the life of the moisturizer by 2-3 times.
Xiaomi recommends weekly cleaning with daily use and deep disinfection once a month, but if you pour tap water into the device (rather than distilled water), the interval is reduced to 3-5 days.
⚠️ Warning: If the humidifier smells of rotten eggs, it's a sign of decomposition of organic deposits. Turn off the device immediately and do a full disinfection cleaning!
What you need to clean the Xiaomi moisturizer
Before you start, prepare the necessary tools and tools. Not all household cleaners are suitable for plastic parts - some can cause clouding or cracking.
| Category | What to use | What to avoid |
|---|---|---|
| Basic funds | Citric acid, vinegar 9%, hydrogen peroxide 3%, specialized tablets for humidifiers (Calgon, Top House) | Bleach, aggressive detergents (Domestos, Mole), abrasive powders |
| Tools | Soft sponge, toothbrush, cotton swabs, microfiber cloth. | Metal brushes, hard washcloths, knives. |
| Additionally. | Distilled water, rubber gloves, disinfection spray (Miramistin) | Acetone, gasoline, solvents |
For models with a carbon filter (for example, Smartmi Air Humidifier Pro) additionally require a vacuum cleaner with a narrow nozzle - it is used to remove dust from the filter before washing.
Step-by-step: how to clean the tank and basic details
Start by disconnecting the device from the network and completely draining the water. Disassemble the humidifier according to the instructions (usually you need to remove the top cover and remove the tank). Most Xiaomi models have a similar design, but there are nuances:
- 🔧 In the Mi Air Humidifier 2, the tank is separated from the base by a counterclockwise turn.
- 🔧 In Smartmi Air Humidifier 2, the top panel with touch buttons is first removed.
- 🔧 In Smartmi Air Humidifier Pro models, the humidity sensor is located on the back wall – do not touch it with wet hands.
Follow the algorithm further:
- Reservoir washing: Fill the tank with warm water (not higher than 40°C) and add 2 tbsp of citric acid or 100 ml of vinegar. Leave for 1-2 hours, then thoroughly rinse under running water. Use a toothbrush for persistent deposits.
- Ultrasonic membrane cleaning: This is the most delicate element! wipe it with a soft sponge soaked in water with peroxide (proportion 1:1). Never use alcohol or vinegar - they destroy the membrane.
- Cleaning nozzles and ducts: Blow the vapor holes with a vacuum cleaner (blowing mode) or clean with a cotton swab soaked in lemon solution.
- Disinfection: Pour a solution of hydrogen peroxide (3%) or a specialized product (for example, Silver Clean), turn the device on for 5-10 minutes in minimum power mode, then drain the liquid.
All parts are dried with a microfiber cloth |
Ultrasonic membrane clean, scratchless |
Filters (if any) are installed in place |
The tank is filled with distilled water-->
⚠️ Warning: If the humidifier makes unusual noise or no steam after cleaning, check the integrity of the membrane. The damaged membrane cannot be repaired, only replaced!
How to Remove Scale and Persistent Pollution
If you have hard water in your area, scale builds up in a matter of days, and you can remove it by:
- 🍋 Citric acid: 3-4 tbsp. l. per 1 liter of water, soak for 3-4 hours. Effectively dissolves lime plaque without harming plastic.
- 🧽 Special pills: For example, Top House or Calgon for humidifiers. Follow the instructions on the package.
- 🧪 Vinegar 9%: Dilute with water 1:1, pour in the tank for 1 hour. Not suitable for membranes! After use, thoroughly rinse.
For extremely advanced cases (thick layer of scale, rust), you can use antinakipin for electric kettles, but only in diluted form (1 cap per 2 liters of water) and with a reduced exposure time (maximum 30 minutes). After such cleaning, be sure to rinse the tank with distilled water 2-3 times.
If the scale has accumulated on the heating element (in models with a warm steam function, such as the Smartmi Air Humidifier 2S), carefully remove it with a plastic scraper or a wooden stick. Metal objects will leave scratches!
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To reduce scale, add 1-2 drops of a wash softener (for example, Lenor) to the water, which is safe for engineering and reduces the hardness of the water.
Disinfection of the moisturiser: how to kill bacteria and mold
Normal water washing is not enough to kill microbes.
| Remedy. | Proportions | Time of exposure | Features |
|---|---|---|---|
| Hydrogen peroxide 3% | 1:1 with water | 10-15 minutes | Safe for the membrane, does not leave a smell |
| Chlorhexidine 0.05% | Don't dilute | 5 minutes. | Effective against mold, but can leave a slight smell |
| Special pills (Silver Clean) | 1 tablet per 1 liter of water | According to the instructions | Long-term protection up to 7 days |
To remove mold:
- Prepare a solution of 1 liter of water, 2 tbsp. l. peroxide and 1 tbsp. l. vinegar.
- Pour in the tank and leave for 1 hour.
- Rub the walls with a sponge, paying attention to black spots.
- Wash 3-4 times with clean water.
If mold has appeared on external surfaces (for example, on the body of the Mi Air Humidifier CA1), wipe them with a napkin soaked in alcohol solution (1:1 with water).
What to do if the smell of mold remains after cleaning?
Cleaning of filters and additional elements
Many Xiaomi models are equipped with interchangeable filters, which also require maintenance:
- 🔄 Coal filter (available in Smartmi Air Humidifier Pro): Rinse under running water once every 2 weeks. Complete replacement every 3-6 months.
- 💧 Ion exchange cartridge (in models with water softening function): Gargle in a solution of citric acid (1 tsp. per 1 liter of water) once a month.
- 🌀 Rotating sprayer (in Mi Air Humidifier 2): Remove and wash with a toothbrush weekly.
To clean the humidity sensor (in smart models with hygrostat), use a dry cotton swab. Do not use liquids! Dust on the sensor leads to incorrect readings and malfunctions.
If your model has an aromatic capsule (e.g. Smartmi Air Humidifier 2S), rinse it separately with warm water and soap. Do not use it for disinfection - essential oils can react with chemicals.
Frequency of cleaning and pollution prevention
Regularity of care depends on the intensity of use and quality of water:
| Type of cleaning | Frequency of distilled water use | Frequency of tap water use |
|---|---|---|
| Flushing the tank | Every 7-10 days | Every 3-5 days |
| Cleaning the membrane and nozzles | Once every 2 weeks | Once a week. |
| Disinfection | Once a month | Once every 2 weeks |
| Replacement of filters | Every 6 months | Every 3 months |
To reduce the frequency of cleaning:
- 💧 Use distilled or softened water (can be bought at car stores or pharmacies).
- 🧼 Add antibacterial drops to the water for humidifiers (e.g. Ballu).
- ☀️ After each use, drain the water and dry the tank in the air (not in direct sunlight!).
- 🔌 Store the device disassembled if you do not use it for longer than 3 days.
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Tap water reduces the life of the humidifier by 30-40%, and distilled water is cheap, but it prevents 90% of problems with scale and bacteria.
Typical mistakes when cleaning Xiaomi moisturiser
Even experienced users sometimes make mistakes that lead to breakdowns or deterioration of the device:
- Use of abrasives: Metallic washcloths or powders scratch the plastic, which leads to a buildup of dirt in microcracks.
- Alcohol/acoustic cleaning: This destroys the ultrasonic element. Only a soft sponge with water or peroxide is suitable for the membrane.
- Neglect of drying: Wet parts during storage are covered with mold in 2-3 days.
- Using aromatic oils is not according to instructions: Oils can clog the nozzles and leave a greasy film on the membrane.
- Cleaning the device on: The risk of short circuit or damage to the electronics.
Another common mistake is ignoring replacement filters, such as the Smartmi Air Humidifier Pro, which eventually saturates the carbon filter with bacteria and becomes the source of the odor itself, and the manufacturer recommends a replacement every 6 months, but with heavy use, this time is reduced to 3-4 months.
⚠️ Warning: If the humidifier starts spitting with water or making gurgling sounds after cleaning, you may have damaged the membrane or improperly assembled the device.