Work involves supervision of maintenance employees who perform, schedule, and/or oversee the work of installations, adjustments, alterations, inspections, maintenance, repairs, and restorations of chilled water systems, direct exchange systems, refrigerated systems, heating systems to include boilers/steam systems, and automated controls The HVAC Supervisor also supervises maintenance employees who work on refrigeration units, such as ice machines, walk in freezer vaults, residential refrigerators, and water based heating and cooling systems such as chillers and boilers; and maintenance employees who properly use, clean, store, inventory and perform minor repairs on tools used. Supervises maintenance employees who maintain accurate records including records of repairs and gauge readings of temperatures, oil levels, and pressures; employees who accurately complete and maintain records on work orders using the designated electronic or hard-copy system; and employees who accurately complete records by other staff.