The most visible change is the refreshed Society's logo, which was created in 1959 when the American Society of Refrigerating Engineers and the
American Society of Heating and Ventilating Engineers merged to form ASHRAE.
"I trust that within the next ten years, the people of every state of the Union will have become so well informed of the necessity for properly ventilated schools and public buildings that it will be considered as great a crime to construct these buildings without providing for sufficient and proper ventilation as it would be to erect a building without a proper foundation." Andrew Harvey, 1904, President
American Society of Heating and Ventilating Engineers (Comstock and Spanos 1975).
As heating systems evolved from steam and hot water to forced warm air systems, combining the heating and air-conditioning functions, the
American Society of Heating and Ventilating Engineers in 1954 changed its name to the American Society of Heating and Air-Conditioning Engineers.