There are over 5.6 million commercial buildings in the U.S., comprising 87 billion square feet of floor space. Air moving, heating, and cooling systems account for the largest amount of electricity used in these buildings. The industry has made intensive efforts to improve the efficiency and productivity of motors and driven equipment. However, the belt drive connecting these components is critical to achieving maximum efficiencies. Two simple solutions for improved HVAC system performance are the use of energy efficient belts and proper drive installation.