Product review (5 stars): Thanks Dundas Jafine! :)
Worked like it was suppose to and made great energy savings in the winter.  Setting it up again this winter and looking forward to the savings.  As dry as our home gets from a fireplace and central heating, the warm air and moisture this puts into our home isn't a problem.  The lint trap is easy to clean and setup is easy for anyone used to putting on a dryer vent.  You do have to figure out a way to hang it up to blow the warm air cleanly and easily into your open room otherwise the humidity would obviously become a problem in a small or tight enclosed space.  But, in an open room? This thing is great!