This is mainly for two reasons: with a cool mist humidifier you do not have water boiling which means, there is no risk of a child (or an adult) burning themselves, additionally they are more energy efficient. Humidifiers work by adding moisture to the air.
In turn, this helps to ease coughing and congestion brought on by a cold. Whether you have a warm mist or cool mist humidifier the vapor will be the same temperature by the time it reaches your airway. If one of your children has the Croup, the cool mist will help to reduce inflammation and swelling in the airways. If someone is congested, the air from the humidifier will help thing secretions. Air from this type of humidifier will also help stop nose bleeds by moisturizing the mucous membranes.
Even if you happen to be healthy, cool mist humidifiers will help to protect you and your family from the sometimes damaging and unhealthy effects of dry, parched air. Humid air can also damage your home furnishings and promote dust mites.To much humidity in a room can especially cause damage to wood furniture and wood flooring within your house.
More common problems associated with to much humidity in your house are damage to wood furniture and wood flooring. Be certain to look for a humidifier that is quiet and is easy to clean especially if you intend to use it often. If you plan to use your new humidifier daily or in a populated area you may want to think about getting one that fits in with your decor. Some come with a demineralization cartridge that ensures the water is free of things like lime scale, bacteria, and other germs.
You will find instructions with the humidifier on how best to do this, but usually washing it daily with soap and water will do the trick. Distilled water should always be used in cool mist humidifiers (unless you purchase one with a demineralization option) because of mineral deposits in regular tap water.