The first concept of #AC occurred around 500 years ago in Persia with giant wind towers.
The first concept of #AC occurred around 500 years ago in Persia with giant wind towers.
— Dor-Mar HVAC (@DorMar_HVAC) December 20, 2017
from Twitter https://twitter.com/DorMar_HVAC
December 20, 2017 at 10:01AM
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