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Air Humidifier Benefits
Ultrasonic humidifiers tend to produce fine grayish dust that can settle around the room, since they have no filter to absorb minerals in the water. Some models, however, come with ceramic-type cartridges that can be refreshed, and these are effective to some degree.
Ordinary tap water often contains a notable mineral content, and with no onboard filters, ultrasonic humidifiers may turn this mineral content into a fine gray or white dust that goes into the air along with the water vapor. This mineral dust lands on furniture and electronics, and it is almost impossible to avoid. The amount of dust will depend on the source of your drinking water. Hard water is notably higher in dissolved minerals that will create dust when processed through an ultrasonic humidifier. Using distilled or filtered reverse osmosis water will reduce the amount of dust you need to clean, though this can be a pricey option. If this is a major annoyance for you, consider buying a unit with a decalcification filter.
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