Willis Carrier
Willis Haviland Carrier (November 26, 1876 – October 7, 1950) was an American engineer, best known for inventing modern air conditioning. Carrier invented the first electrical air conditioning unit in 1902. In 1915, he founded Carrier Corporation, a company specializing in the manufacture and distribution of heating, ventilation, and air conditioning (HVAC) systems.
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.