Air conditioning
In 1902, the first modern electrical air conditioning unit was invented by Willis Carrier in Buffalo, New York. After graduating from Cornell University, Carrier found a job at the Buffalo Forge Company. There, he began experimenting with air conditioning as a way to solve an application problem for the Sackett-Wilhelms Lithographing and Publishing Company in Brooklyn, New York. The first air conditioner, designed and built in Buffalo by Carrier, began working on 17 July 1902.
St George's Hall, Liverpool
In the basement is part of a unique heating and ventilation system devised by Dr Boswell Reid. This was the first attempt at providing air conditioning in a public building in the United Kingdom, its aim being to warm and ventilate the building without draughts. Air was warmed by five hot water pipes which were heated by two coke-fired boilers and two steam boilers. The air was circulated by four fans wide. It was controlled by a large number of workers opening and closing a series of canvas flaps. In 2005 the Heritage Group of the Chartered Institution of Building Services Engineers awarded its first Blue Plaque to St George's Hall recognising it as the World's First Air Conditioned Building.