A dehumidifier is designed simply to extract water vapor from the air. Though you should take a few things into consideration before you purchase one. The capabilities of a dehumidifier are based on many factors within a home... such as climate, number of windows & doors, number of family members, laundry equipment and the degree of humidity. There are many models and sizes to choose from. Features vary from removable water containers, drain hose connections, adjustable humidistat controls... to washable filters, integrated handles... and even LCD display pads. Check for energy-star qualifying models that can save you more money. Capacity of dehumidifiers are calculated in (U.S. Pints) or in litres and typically range from 18 to 55 pints or (8.5 to 26L). Woods & Whirlpool offer several different models to choose from depending on your requirements.