i keep my edgestar at the highest temperature setting, so the cooling unit kicks in as little as possible. so far the temp sits rock solid at 66 degrees, and the humidity stays at 66percent. a quick drop in humidity (like when you open the doors) shouldn't harm your cigars, *especially* if you keep them in boxes or covered drawers.
a couple threads worth perusing for this kind of info are:
Vino Temp 102
http://www.cigarasylum.com/vb/showth...estar+humidity
VinoTemp Humidity Test Results
http://www.cigarasylum.com/vb/showth...estar+humidity