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Archive for January 2018

History of Air Conditioning and Heating

Although they have become every-day items, air-conditioning and heating were once considered luxuries. Let’s explore their fascinating history! The History of Air-conditioning Long ago, the ancient Egyptians understood the evaporating process and hung wet clothes on the doorways to cool the breeze blowing by them. The ancient Chinese invented a hand-cranked rotary fan. In the…

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