Demolished 12 existing roof-top units, installed 12 roof-top air handling units (cooling units – 70 to 155 tons, heating units – 50 to 125 tons) along with brand new chilled water lines, new underground 12-inch chilled water lines, demolished 12 existing RTU’s, replaced with new chilled water units, new split systems in existing electric rooms, two new fan coils, ducting, chilled water and condensate lines.