"Today there is a general trend to update existing buildings to be more energy efficient through various technology upgrades. Therefore, our upgrade program started primarily as a utility cost avoidance measure, which included the application of adjustable-frequency drives (afd's), the retrofitting of light fixtures, the use of electronic ballasts along with the installation of other energy reduction projects."
"We looked at the amount of constant-speed air handlers that we had in the Government Center," recalls Earl. "As a result, we felt that there were initially twenty-eight air handlers totaling 2,510 horsepower that would be good matches for energy-saving adjustable-frequency drives.