If you have the problem of excessive humidity in your house then installs House Dehumidifier which can remove pints of excess moisture per day. These dehumidifiers are effective in virtually every home because it covers up to 3000 sq.ft. in the most humid conditions. It is definitely expensive than a portable dehumidifier but it saves you a lot of maintenance with its continuous and automatic dehumidification. It prevents mold growth and its filter removes other airborne contaminants from the drain hose.