I was watching an old western on TV last night called Wagon Train. The story was set in Texas during the summer and I wondered how people back then got through the long hot summer without air conditioning. They didn’t even have electricity to run a fan. I grew up in the south without air conditioning but everyone always had a fan. I know what most people would say about a fan contrary to air conditioning, that all a fan does is blow heat around. But actually, a fan is a pretty good substitute for air conditioning once you learn how to use it. Contrary to popular belief, If you install an exhaust fan in a single window of the upstairs to a house, you can keep that area cool by means of cracking open a window around each room by just an inch or two. When you do so, you will create a vacuum designed to draw a strong stream of cool air during the evening through the upstairs that could rival the cooling effects from an air conditioning. Of course, nowadays the majority of houses have a fancy HVAC system that keeps the home cool by use of a simple thermostat setting. Furthermore, I believe anyone who reads this article is skeptical in the claims contained herein, but I am a believer. I used the exhaust fan method for many a summer in a house I lived in. Give me a big enough exhaust fan and I can cool a house even on the hottest day of summer!