On those really hot days when you can’t imagine being out of an air conditioned home or office, aren’t you happy to live in the 21st century? Luckily, your descendants and those before had all types of inventive ways to keep cool. And all of that clever thinking eventually led to the development of the air conditioning that you enjoy today! Let’s get started with a brief, yet surprisingly fascinating history of air conditioning. The Fascinating History of Air Conditioning Underground Homes The cave dwellers found that it was cooler underground and inside the Earth. They built homes in caves to get themselves out of the hot sun. Although this was around 12,000 years ago, the cave dwellers knew what they were doing. (Today we call this geothermal cooling, and it’s highly efficient and green!) First Water-Cooled AC Fast forward to the days of the Egyptians, when the first water-cooled air conditioner was discovered. The […]