更新1:
I want to start putting stuff in my unfinished basement that has insulation hanging from the ceiling and have cement floors and walls. The insulation makes the room warm in the winter and hot in the summer. Currently it is 50 degrees down there and the humidity is at 55% . Only read online dehumidifiers are used in the summer? When do i start using one? Only want to use it when necessary. what humidity level should i keep the room at?