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Ultrasonic cool mist humidifiers. Using physical sonic energy or vibrational sound energy, Dr. Yong notes, these humidifiers produce a cool mist that adds moisture to the air.
Ultrasonic: Ultrasonic humidifiers have a metal diaphragm that vibrates at a high frequency, creating tiny water droplets that are propelled into the air. They’re quieter than fan-powered ...
But while a warm-mist humidifier boils water (and can heat up a room during the warmer months), cool-mist humidifiers use ultrasonic technology or fans to release a fine mist into the air. These ...
An ultrasonic humidifier with a bottom filled tank that has a replaceable demineralization unit (see inside bottom) Tank cap-based humidifiers are more inconvenient to fill than top fill tanks, because the demineralization filter has to be unscrewed and screwed back on a daily basis.
The ultrasonic humidifier, one type of nebulizer (a device that creates a very fine spray), is a popular type of humidifier. It works by vibrating a metal plate at ultrasonic frequencies to nebulize (sometimes incorrectly called "atomize") the water.
An ultrasonic diffuser is the same as a nebulizer but uses a water/oil mixture. This makes the mist not so concentrated. This device can be used as a humidifier. These diffusers contain an ultrasonic transducer, which vaporizes the water/oil mixture through cavitation and creates instantaneous vapor.