Caveat: The device is very good in the silent version, in the intensive version a noise. But the negative evaluation has a different cause: The filter (which can not be cleaned) has a lifetime of 40 fillings of the water tank (which were not even reach for me), then the device no longer functions simply! A new filter will cost 24! Euro, a price which is justified by the cost of nothing. Every day operating costs therefore 60 cents. Extrapolated over the year means the operating costs of 219 Euro! This sounds like the old Kodak principle: Give the camera and deserve at the movies! Conclusion: Never again.
