Some regions have excess amounts of humidity in the air. You would use one if you are in very high moisture climates. High levels of moisture are just as unhealthy as low levels of moisture. A dehumidifier is going to remove those particles from the air, and it will assist in bringing down the humidity level. As a result, it will limit the growth of mold and other similar contaminants. Molds are damaging to your lungs. Moisture can also have a negative effect on your lungs too. Too much moisture is a bad thing. On our planet, things need to have a balance. So, if you are in a place like Florida or Hawaii, you may want to consider a dehumidifier. However, most of North America has problems with not enough humidity.
