This device is rather design, silent, somewhat heavy and cumbersome. It removes air from its dust and odors in suspension, and humidifies it. It is very interesting, especially winter and summer when the rooms become very dry; it provides, in effect, a more pleasant atmosphere, clean and soft. It will also prevent your wood furniture to crack The problem is that its tank is not large enough so it must be filled often enough but, above all, the user is supposed to carry out a cleaning every three days if lon believe the manufacturer's recommendations. If that is indeed the case, this constraint would be prohibitive