Humidifier care
How to care for a humidifier
Fresh water, regular cleaning and complete drying help keep the appliance suitable for everyday use.
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The short answer
For MH-204W/MH-204B, follow the schedule in the linked MH-204W manual: empty and rinse the tank and add clean cool water up to 40 °C daily; clean the tank and transducer every two weeks. Use purified or distilled water where tap water is hard.
Refresh water and inspect the tank
Empty and rinse the tank, then replace the water daily. Clean the humidification chamber only as described in the manual; do not rinse or immerse the powered base.
Remove deposits safely
Clean the tank and transducer every two weeks. Use the method permitted by the manual, never immerse electrical parts and do not add fragrances, oils or other substances to the water tank.
Prepare the unit for storage
Clean and dry every permitted removable part. Store the appliance without water in a dry place and protect openings from dust.
Care routine
- Switch off and unplug before handling water parts.
- Empty, rinse and replace water daily.
- Clean the tank and transducer every two weeks.
- Dry the tank and base fully before long storage.
Common mistakes
- Adding fresh water to stagnant water repeatedly.
- Putting fragrances, oils or other additives into the water tank.
- Storing the appliance damp or with water inside.
Models to compare
WetAir manuals and support
Check the exact model requirements
If mist output changes after correct cleaning, check the troubleshooting section of the manual or contact WetAir service.
Sources and review
The routine is based on the verified WetAir humidifier manual; exact water and cleaning rules vary by model.
Frequently asked questions
Can I just top up the remaining water?
No. For MH-204W/MH-204B, empty and rinse the tank, then replace the water daily.
What water should I use?
Use clean cool water up to 40 °C. The MH-204W manual recommends purified or distilled water when tap water is hard.
How should a humidifier be stored?
Store it clean, fully dry and empty, with removable parts assembled as directed by the manual.