There are severl things to consider first: 1) Was the proper double-paned, Low-E windows made for such a location installed? 2) Is the room properly insulated? 3) Does the existing HVAC unit have the ... read more
ConsultĀ a professional.
Whether it's 12" or 12' off the ground there are too many safety and code issues for the average homeowner to tackle. Better to do it right than to regret it later.