So I finally have one of them fancy dehumidifiers that has a finely adjustable humidi-stat in the basement to keep the collection dry. What's the ideal setting? I know too dry isn't a good thing, for neither the collection nor my house. Right now I've got it set to 40% and it's running pretty aggressively. My basement hovers between 55 and 60 degrees Fahrenheit throughout the year, and the dehumidifier figures out relative humidity for you.