Chattanooga Times Free Press - Parade

Ask Marilyn

- By Marilyn vos Savant

A one-level house has no air conditioni­ng. At night, two windows on opposite corners of the house are opened. One window has a fan. With no wind, is it better to face the fan outdoors so it blows the warmer air out? Or should it face indoors so it blows the cooler air in?

—Ben Lindsay, Rigby, Idaho

Face the fan outdoors, open a couple of windows in rooms that are far from the fan, and close all windows near the fan. This should make the fan suck in cool outside air through those open windows on the far corner of the house and blow warm household air outside. Also, this will have even more effect when the open windows are on the windy side of the house.

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