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 as the unit does not heat the water in any way. Since there is no boiling water process, an ultrasonic humidifier is quieter to operate.
However, as the water is not boiled to produce a mist. there is a risk of bacteria being present in the water (depending on the water source) and being discharged to the room. Therefore, it is recommended to change the water regularly and add our Antimicrobial concentrate or Aroma concentrate (for use in humidifier) to eliminate bacteria in the water and create healthier and fragrant air.