Condensation needs to be taken seriously! Ignoring it can damage the RV which is not warrantable and most importantly could lead to mold issues which could be a health hazard. The key to controlling condensation is ventilation. A family in the course of normal use (breathing, bathing, cooking, washing dishes, wet towels/clothes, etc.) can put gallons of moisture (water) into the air. If that moisture is unable to escape the RV, you will experience condensation. Tips to proper ventilation: crack a window, crack the roof vents, utilize the roof fans when showering, use the range hood fan when cooking or washing dishes, avoid hanging wet towels/clothes inside to dry. If these basic tips are unsuccessful in controlling condensation, it may even be necessary to consider purchasing a dehumidifier. (See Keystone RV Owner’s Manual Chapter 3, for further information regarding controlling indoor air quality).