Originally Posted by CoolerMasterD
So you don't think setting the case above the ac vent would hurt anything?
This has been addressed many times with various answers. From my 40 years in the air conditioning service business I can tell you this. Unless the humidity in the room is low (less than 40%), direct contact with cold air into a case having an ambient of 70 degrees or more will cause condensation. If the cold air is mixed somewhat with the ambient air the probability of condensation is greatly reduced. The real cause of condensation is the difference in wet bulb temperature and dry bulb temperature, or relative humidity. The more difference, the higher the humidity. Wet bulb temperature is described as the temperature shown on a bulb type thermometer having its bulb covered with water laden material. Dry bulb temperature is taken with a bulb type thermometer having nothing covering its bulb. On the other end of the humidity scale, ie low humidity, static electricity becomes a problem. Below 35% is the point at which it becomes risky to your rig. If you have no way to measure the above conditions (hygrometer or sling psychrometer), I would advise finding a way to mix the ambient with the cold air from your supply air duct.