Dave, as I mentioned before, a 'normal' level of humidity for our bungalow is around 60%. Last night we hung an airer of washing in our front room, put the Dehumidifier in there, pulled the door too and left it for the night. In the morning, the room was sitting at 52% humidity, tank almost full on the Dehumidifier and the washing was almost dry. Better still, there wasn't even a drop of condensation on the windows.

The bungalow is already starting to 'feel' drier.

Hope this helps.