The dehumidification performance is so far OK. Sometimes, however, it runs without ever the Luftentfeuchtet is so under a humidity of 60% seems to be the device to dehumidify the moisture only at certain room temperatures yet. Unfortunately, this is devoid of any evidence in the instructions. Behind demäußeren air grille a nylon mesh is attached as a lint filter from the bottom of the tank, this filter should be cleaned often and replace at least every month. Presumably this refers to a daily operation. Information about the price of a replacement filter and a reference address is not given. On the Internet address of the manufacturer of filters but ordered for 6 euros. At Amazon, I have not found him. I clean the nylon mesh rather cautious and think you have the filter does not necessarily change as often. However, the fluff Shobal fix the internal cooling grid is a cleaning specialist in maturity, therefore, the cleaning already an important issue.