when the cold air clases with the warm air to create mist

As opposed to a cool mist humidifier, a warm mist humidifier uses heated water to provide humidity. It is also sometimes used to dispense medications into the air. A warm mist humidifier is more soothing if you have the chills. A cool mist humidifier might be preferable if you have a cold during warm months, if you don't want more heat in the room. Either will be a great benefit to help open sinuses and soothe dry skin.

Warm mist humidifiers may be good depending on individual needs. Some say cold mist humidifiers makes it easier to breathe if the individual has asthma or allergies, while warm mist humidifiers may be good for use in conjunction with steaming medication. They are also a little quieter in their running.

One can buy a Warm Mist humidifier in stores or online. For in stores, they can buy them at Sears or Walmart. For online, one can buy them at Amazon or eBay.

A warm mist humidifier heats up the water causing steam to rise and humidify the air. A cool mist humidifier uses a wick filter which uses either a fan to blow through the filter and blowing the water in a fine mist or a metal diaphragm which vibrates water particles into the air.