There’s no better feeling than walking from the sweltering heat of a sunny, mid-summer day into a cool, air-conditioned building. Ancient cultures didn’t have that luxury, especially if they weren’t one of the wealthy elites of society. So how did people keep themselves cool before the invention of modern air-conditioners? Below is an infographic about the History of Cold Air. If you’re interested in pursing an education in HVAC, check out Fortis’s HVAC program!
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