Gra-Tac Heating & Cooling was started by John Graff and Charley Tackett. On March 19th, 1976, John & Charley decided to stop building air conditioners at the Chrysler Air-Temp factory(Where the Corvette Plant is now)and start installing and servicing them Today, Gra-Tac has grown into a modern HVAC contractor, you will see our men and women working across Southern Kentucky. Gra-Tac's headquarters is at 563 Lovers Lane in Bowling Green, KY, with 13,000 square feet of office, manufacturing, and storage space