Uses hand tools of the electrical and HVAC trades, related power equipment, testing instruments such as ohmmeters, voltage and amperage meters, refrigerant gauges, leak detection equipment, recovery machines, vacuum pumps, and other diagnostic equipment. Under the direct supervision of Maintenance and Transportation Coordinator, to perform maintenance, repair, installation, and renovation work in school buildings and facilities, including electrical systems, heating, ventilation, air conditioning (HVAC), and refrigeration equipment.