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25 sats \ 0 replies \ @Undisciplined 10 May \ parent \ on: What's something your significant other believes that you find ridiculous? AskSN
I'm saying the circulating colder air will push the warmer air out of the upstairs window, if the air outside that window is cooler than the air inside.
It's an efficiency improvement, because the AC system is basically inducing convection, which is a very efficient form of heat transfer.