Our area is very humid, and mould and mildew are a problem. We've only had the Delonghi Dehumidifier for a couple of weeks, and so far it has worked extremely well. Amazing amount of water retrieved over the first week in the problem areas, and now the rooms seem somewhat stabilized. I was so impressed I've just bought another one, this time the Delonghi DDSX225 as it has a bigger tank.