Do I also need a Humidifier? If I have a geothermal system installed will I also need some type of humidifier. I live in Delaware about 2 miles from the beach,I have hard wood floors throughout most of the house which are effected by dry conditions in the house. I use a portable humidifier now to control the humidity in the house during the winter months. The heat pump system seems to dry out the house considerably when the temperatures drop. Any information would be greatly appreciated.