How to Keep a Mist Humidifier from Making Dust

The ideal humidity level in an indoor environment is between 30 and 50 percent, according to the Mayo Clinic. If the humidity level falls below this range, you may begin seeing symptoms that include dry skin, itchy eyes and irritated sinuses. While you can increase the humidity level in your home with a cool-mist humidifier, these appliances will dispel a fine, white dust into the air. This dust will hang in the air, and eventually settle over furniture and objects in the room. Keep a mist humidifier from making dust with several techniques that will minimize the situation.

Demineralized or distilled water
Demineralization filter
Reverse-osmosis water filter system

Instructions

- 1
  Fill the mist humidifier with demineralized or distilled water. Although these waters are not completely devoid of minerals, the mineral concentration is much less than standard water. By using demineralized or distilled water in the cool-mist humidifier, you will significantly reduce the amount of white dust in your interior.
- 2
  Insert a demineralization filter into the cool-mist humidifier, if applicable. Many cool-mist humidifiers have this optional accessory that filters standard water during regular operation, reducing the amount of white dust that you will notice in the room.
- 3
  Remove minerals from standard water with a reverse-osmosis water filter system. Most reverse-osmosis systems install under the sink to filter out contaminants and chemicals. The reverse-osmosis filtering process also demineralizes water, making it suitable for use in a cool-mist humidifier.

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