After long (senseless) experiments with Entfeuchterboxen (chemically) I bought this device. I run it in my basement and I have it at 55% rel. Humidity set. By that I entfeuchte since about 4 weeks 2 large cellars (80 m² or 200 m³!). Every day can be collected as about 2.5 liters of water and emptied by me. Approximately 1 week after the start-up even before the musty smell of the rooms was gone. I can only recommend it to past experience.
