We built a new house 2 years, 3 months ago and installed General Aluminum single hung series 5000-5300 windows. We purchased them from National Home Center in Russellville, Arkansas. At the time of purchase we inquired about the possiblility of sweating and were told they had received no complaints of this window sweating. This is the 3rd winter since we built and the sweating is so bad, the sills are badly water damaged and in very cold weather we actually have extremely large amounts of ice form on the inside of these window... read full review »