I have a recurring problem with mold in the closet of a basement level bedroom. After considering various options, I'm currently contemplating installing some sort of a low powered continuous exhaust fan which would keep the air moving out of from the bedroom and closet to the outside. The top of the closet is above ground level, so it could go directly through the wall. There is central air in the house which would allow the bedroom's air to be replenished from other rooms.
Is this a good idea? What could be the pitfalls (other than the obvious heat loss)?
This makes me think that the solution is similar to a radon mitigation system (although admittedly, I know very little about those).