HVAC ducts found in contact with one another during a Home Inspection in Katy, Tx. Ducts that stay in contact can "sweat" and cause moisture to build up possibly damaging sheetrock or other areas of the house. The solution is inexpensive and easy to do. A simple piece of insulation can be placed between the two HVAC ducts to keep them from creating moisture and save you a ton of headaches in the future!