The Eva-Dry mid-size Dehumidifier uses Peltier technology which makes it light and quiet. It is perfect for bathrooms, and small to mid-size rooms where dampness and humidity are a problem. This unit is small enough to easily fit on your counter top, boat, or RV. It extracts the moisture from the air and stores it in a spill-proof reservoir. Just plug it in and it quietly goes to work. Enviornmentally friendly.Water tank capacity is 2 liters.Helps prevent mold and mildew.Allergy and asthma relief.