I'm just a little worried, because they get pretty hot when we aren't venting the room out. Part of the reason they suck so much water I think. Out of curiousity, all the insides of my walls are connected and air flow freely. What do you think of running some ducting from one room out to another and placing a fan in front of the duct? Would that be sufficient venting, and how big would I have to go? 4-5" ducting and fan?