Taking long hot showers !? in Technical Tips and Tricks Posted December 19, 2019 · Report reply 23 hours ago, rving mr said: I steal need to know if the rv will take damage from taking long showers in it every day !? Only if you forget to empty the gray water tank. You will need to open your bathroom vent while showering to minimize the increase in humidity that showers cause. An RV has far less volume of air so the moisture that is put into the air from your activities, like cooking, showering, and even breathing will cause the humidity to be very high and that could cause your windows to sweat the same can happen in closets and behind furniture. Dual pane windows are less prone to this problem but even then the window frames may collect moisture.