There are many benefits provided by Ultrasonic and evaporative humidifiers. They both help to maintain the elasticity of wooden furniture, provide humidity for houseplants and human beings, relieve dry winter skin, improve the quality of air and decrease static electricity during the colder months. Especially, they both provide help for easy breathing to those person with respiratory conditions, such as asthmatics. Besides, their using of cool water can prevent burning accidents if the heating option is not chosen.
How Each Functions
Ultrasonic humidifiers produce a high-frequency ultrasonic sound wave, which can vibrate a metal diaphragm inside the machine. The vibration of the metal diaphragm disintegrates the water in the tank into a fog-like vapor mist, which will be blew out into the air.
Evaporative humidifiers create a mist via blowing air crossing a wick or filter ( a wicking filter) moistened with water, which causes the water to evaporate into the air. The wick/filter helps the device produce as much as 13 gallons a day, which is the highest production amid all types of humidifier.
Advantages of Each
Ultrasonic humidifiers are actually incredibly quiet, although ultrasonic sound waves and the vibration of the diaphragm exist. You can avoid bacteria growth in the water tank simply by heating up the water before ultrasonication, needn’t to replace any parts of the machine.
The humidification method of Evaporative humidifiers is the cleanest in similar products, because that water are changed into moisture through evaporation in nature.
These machines can also adjust their evaporation amount according to the surrounding humidity, that is to say, they can evaporate more water if the humidity of the surroundings is low, and vice versa. Besides, the the wick/filter can not only prevent white dust, but avoid allowing minerals to pass into the air through evaporated water, thereby ensuring high air quality. Finally, this machine is also the cheapest among similar devices, and can be used in large rooms.
Disadvantages of Each
The effective working space of ultrasonic humidifiers are limited. If a filter or de-mineralization cartridge is not used, the ultrasonic humidifier will bring about white dusts depositing on surroundings. Besides, the cartridges may not be effective all the time.
Some of us may be sensitive to the noise from the fan of the evaporative humidifiers, they may be so bored with the noise to change for another alternative device, although this noise is actually quite low. Replacement of the wick or filter at every 60 days must be ensured to prevent bacteria, mold and minerals, unless you are using a device with reusable filters.
Notice that, due to the tiny size of the white dust coming with the mist, you can easily breath the dust in your lungs, causing respiratory conditions. Besides, you should be careful of a special bacteria which grows in the dirty water–Legionella pneumophila, for that this bacteria may lead to legionnaire’s disease, causing sever infections and flu-like symptoms.
Decant residual water when the ultrasonic or evaporative humidifier is not in use. Although using distilled water can avoid the development of white dust, it’s necessary to clean and disinfect the water tank to prevent allergies, asthma attacks and other respiratory conditions, this is especially true when you are using tap water.