In addition to a drainage system and sump pump, another important aspect to consider when waterproofing a basement is the humidity. An excess of humidity can lead to problems with rot, mold, allergens, pests, and more. The SaniDry XP dehumidifier can dehumidify and filter your air at the same time. Its ENERGY STAR® rating makes it three times more efficient than common hardware store dehumidifiers, while its powerful blower allows it to dehumidify up to 2,500 square feet.