Most houses that don't have central air conditioning don't have the furnace fan run at all in the summer, if you are worried about humidity then get a dehumidifier that turns on at a set humidity and place it in the most humid part of the house, chances are it will never turn on when you are gone unless you have something like a basement that gets damp when it rains.
The place I work is always damp in the summer but no one has been there for the last two weeks and when I went in today it was cool and very dry, while I was there the temp went up by 4 degrees and the humidity went way up as well.
|