:: A soggy subject.

Muggy, humid air may be good for tropical plants, but it's not good for your family's comfort – or health. Air that's too dry causes problems, too.

Too much moisture inside your home can make the air feel stuffy. Even worse, it can promote the growth of mold, mildew, fungi, bacteria and viruses that can cause or worsen asthma, as well as hay fever and other allergies.*

Too little moisture in the air can lead to dry skin, sore throats and respiratory problems,* not to mention annoying static electricity.

*American Academy of Allergy, Asthma & Immunology, 2004