Company History - Over 70 years in business - Thompson was started in the late 20's - Became an Ohio corporation in 1937 with Hugh Thompson as the owner - 1983 Thompson Heating & Cooling Purchased Bud Naylor Heating and Cooling - 1990 Thompson Purchased the John Diehl Company - All three of these companies were well know for high quality installations and service - Thompson has a long history of being the best in quality and customer service in the Greater Cincinnati Northern Kentucky region - They have been the leader in indoor comfort for over 70 years!!!!!!