The air in your basement and crawl space is the same air that's being breathed in your home's living spaces. Moist air is the perfect breeding ground for pests, airborne viruses, mold, and mildew. AprilAire Dehumidifiers are ideal for dehumidifying your whole home, basement, or sealed crawl space. Set up is easy and maintenance is low, with no messy trays to empty, and simple filter cleaning or replacement.