 Hottel received many distinguished professional awards, including the Medal for Merit in 1948, a civilian award, for "exceptionally meritorious conduct in the performance of outstanding services to the United States" for his World War II service.The British government honoured him for his role in the war with the King's Medal for Service in the Cause of Freedom.He also received the 1960 Sir Alfred Egerton Gold Medal from the Combustion Institute (which he co-founded) and the Melchett Medal from the Institute of Fuel in Great Britain.