Good afternoon

I’m looking for a half way decent humidistat 6” extractor fan, the room it’ll be in suffers from damp ( one wall is half height below ground level, and house has had all sorts of changes in its history that have’nt helped), the fan is intended to hopefully improve the internal conditions a bit until such time as the causes can be dealt with.
Also internal condensation can be a problem. Lots of fans available, however does anyone have experience of either one they’ve been happy with or ones to avoid. Noise levels will be important.

Many thanks

Thank you