I was told by my tech that it is a good idea to have a dehumidifier in my RV. I purchased a 4 pint small dehumidifier from Home Depot for $50. It works great and I can't believe how much it helps keep the moisture down inside. I don't have the fogged up windows and the moisture around the air conditioner unit. Just an FYI that I thought I would share with everyone. Have a Great Day!