We are looking at purchasing the Elite 44. The installer says that the remote blower fan has to be on an outside wall, but the literature says it can be on an inside or outside wall. The literature goes on to say that if you live in a cold climate (indicated on a map), it has to be on the inside wall. Any insight on this? Why would I want to bring in 10 degree air and try to heat that. It doesn't seem efficient. Is there a conflict between code and their engineering? Thanks for your input!