Keeping humidity low is all about making sure the air doesn't cool too much, or if it does, replacing it with drier (colder) air from outside. There is a certai

Keeping humidity low is all about making sure the air doesn't cool too much, or if it does, replacing it with drier (colder) air from outside. There is a certain amount of water in air and when it cools this water will condense. Good insulation (keeping inner temp constant) is key.