Maintains and repairs buildings' plumbing, HVAC, air compressors, boilers, fire systems and electrical systems, including replacing worn or defective parts such as switches and fuses. May test and chemically treat boilers, wells, chillers and hot water systems. Perform inspections of fire and safety controls and systems. Makes minor repairs to parking lots and sidewalks with asphalt, cold patching materials and concrete. Repair or replace doors, building brick, stone and concrete. Oversee Custodial and/or landscape contractors while on premises.