My aunt has a lot of antiques in her home.  She lives in a small house, so there are few places to put most of her antique furniture.  I told her she should put some of her extra heirlooms in a climate controlled storage space.  Climate control units have about the same temperature year round.  They are about room temperature, meaning they protect things from the elements.  I told her that not only would she have more room, but she would also be able to make sure her things are safe.  She has yet to look into it, though.