Our basement typically stays 8-10 degrees cooler than the main floor. So when it's hot enough outside that we need some cooling, it's tempting to turn the AC fan to ON and let some of that cool basement air cool the rest of the house. (The basement is partly finished and has air supplies and a return, just like the main floor.) The problem is, if we do that then the air moving over the drain pan picks up the water that's sitting in the pan, raising the humidity in the house. (I had thought it was doing that, just from the way it felt, and then I recently read an article that said that's exactly what happens.) We definitely do not want to raise the humidity; we're already using a dehumidifier to keep it down.
My questions: It looks like the primary drain is more than an inch above the bottom of the drain pan. Why in the world is it so high? That just holds water in there. Is there any reason why I can't put another hole in the drain pan, right at the bottom of the side, to drain most of the water out?
Thanks a lot.