Information on how to choose a dehumidifier is abundant. However the most obvious factors to consider when choosing a dehumidifier are the size of the unit, humidity level, and the area to be dehumidified. However these are just outside factors to get the right unit. To get the best dehumidifier that will not only eradicate moisture from the air but also give you peace of mind, then only the best unit will do. Large units work perfectly for large areas while you can use small units in restricted spaces. Look out for units with an automatic defrost function, a humidistat, a higher storage tank capacity, and a washable filter.