I live in a flat in an older house and I have the disadvantage of living next to an outer wall. In autums/springs there is a period when the central heating isn't turned on yet, but it's already getting cold outside. During this time the wall (and generally air inside) gets quite moist and mold starts forming. Also the moist air makes it feel much colder than it really is (the thermometer shows 20C, but it feels like 15C).
Thus I'm looking at dehumidifiers and air conditioners. The first are cheaper by half, the latter are more powerful (according to spec) and can also be used for cooling the air in the summer.
But I really wonder how much I can trust the spec and how much it would really help. Does anyone have any experience with this?