Is your crawl space or dirty basement getting water after a heavy rain? Is your home excessively humid due to a damp crawl space? Is a damp crawl space affecting indoor air quality? Moisture problems and mold problems in crawl spaces and basements can lead to the growth of indoor air pollution. They can affect your health and the structure of your home. Correcting damp and moldy crawl spaces and dirty basements is the key to the problem. 145 PPD Compact Dehumidifier is ideal for crawl spaces and basements as well as commercial spaces such as gyms, offices, warehouses, laundromats, laboratories, libraries, printing plants, and even where water damage control and quick drying are required for spills and floods that could damage equipment construction site etc.