So after making some inquiries to this at Heartland itself and from what I have read on the forums, I went and pulled the vent in the bedroom to check and found nothing. This led me to thinking some more and went to the vent in the kitchen. Guess what I found? Yep, a pigtail for an A/C unit. I am both happy and a little disgruntled. I have pre wire, but why would I want two A/C units in the same room when I need the second one in the bedroom. If I did install at that location, how would I get the cool air to the opposite end of the trailer. Would something like a fan in the bedroom vent fix that? How easy would it be to fish 12 volt wiring to the bedroom to do this? Could I piggy off the vent in the bathroom?