Originally Posted by
Brian Elfert
Sure, you can't put a window air conditioner in a casement window, but most houses old enough to need window air conditioners also tend not to have casement windows. Even here in Minneapolis central A/C has been installed in the majority of new houses since the late 1970s. I suspect the only new houses built in this area since 1990 without central A/C were really, really cheap starter houses, or the buyer of the new house specifically requested no air conditioning.
Most homeowners aren't using windows to get out on the roof often enough to worry about breaking the window.