The Edv-2200 is the most recient addition to the Eva-dry line. Using the same "Peltier" technology as the Edv-1100 (its smaller counter part) , it quietly absorbs moisture at a much more effective rate, as well as from a larger area. Once the Edv-2200 has reached its capacity, there is an indicator light that will alert you that the resivor needs to be emptied and the unit will turn itself off. This is a perfect item if you are having a hard time dealing with mold or mildew in your bathroom, on your boat or R.V. or in your house.