It is important to use a humidifier only when conditions require it, to use the correct moisture setting for existing conditions, and to clean it thoroughly. The possible health effects resulting from the dispersal of microorganisms and minerals by home humidifiers are not fully understood.
Meanwhile, it may be prudent to reduce the potential for personal exposures to these materials by taking the following precautions, particularly when using ultrasonic and impeller humidifiers.
Empty the tank, wipe all surfaces dry, and refill the water in portable humidifiers daily to reduce any growth of microorganisms; follow the manufacturer's instructions for changing water in console humidifiers. It may help to know more about the uses on home humidifiers. Digital humidistat’s in these appliances are not very precise, but they do give you an indication of level of room humidity, and the best humidifiers will automatically shut off when the required humidity is reached. Remember, over-humidification can lead to mold, dust mite and bacteria growth.
