This dehumidifier came with our home, which we're renting. I want to know how often I "should" run it and what % humidity I "should" set it for. I has the option to be every 2 hrs, every 4 hrs and continuous. But I don't want an exhorbitant utility bill, just want to avoid mold and keep basement as healthy as possible. Thanks! Reply to CKoach@juno.com - please do not add me to a mailing list!