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What's an Ultrasonic Humidifier & How Does the Process Work

By , About.com Guide

Question: What's an Ultrasonic Humidifier & How Does the Process Work
How does an ultrasonic humidifier work and how is this humidification process different from other humidifiers?
Answer: An ultrasonic humidifier is one that uses high-frequency sound vibrations to produce an extra fine water mist that is then expelled to add moisture to the room. Some prefer this type of humidifier because it is considered safer in that there is no hot water present in the unit and therefore no risk of scalding since the unit does not heat the water in any way.

However, since the water is not boiled to produce a mist, there is a risk of bacteria being present in it and being discharged to the room. Disinfecting the humidifier becomes even more important than with a humidifier that does boil the water. Since there is no boiling process, an ultrasonic humidifier is quieter to operate than an evaporative humidifier.

How an evaporative humidifier works
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