In 1820, English scientist and inventor Michael Faraday identified that compressing and liquefying ammonia could chill air once the liquefied ammonia was allowed to evaporate. In 1842, Florida medical doctor John Gorrie utilised compressor know-how to develop ice, which he accustomed to great air for his patients in his hospital http://air-conditioning-installa84948.tinyblogging.com/The-Greatest-Guide-To-air-conditioning-installation-20664505