[kixiQu]

People are responding pointing out that there are lots of places where it's too hot for this -- but actually, I do live somewhere this would work, except that the condo I live in has tiny slivers of barely-openable windows (I think it's because of the environmental certification the building got?) that don't let a meaningful amount of air in or out. All the heat from lower floors traveling up also then means there are times we have to run the AC in winter... thanks, architects.