cooling off a house By j.horn Jan 1, 1800 Dried up plants they dried up plant suck as straw water reed and sedge and put it on the roof. Period: Nov 14, 1800 to Nov 14, 2011 cooling off a home Nov 16, 1820 history of air conditioning a britist scientist discoverd that compresing and liquefying ammonia could chill air when liquefied ammonia was allowed to evaporate.