Performs daily cleaning and sanitizing of offices, classrooms, labs, hallways, lavatories and other areas, including vacuuming, emptying trash and recycling, dusting, cleaning glass, washing floors, stripping, waxing and buffing floors, cleaning carpets and other custodial duties as required. Inspects and cleans boilers, monitors heating system gauges, performs preventative maintenance on circulation pumps and compressors, maintains internal exit and emergency lighting, changes HVAC filters, lubricates bearings, and changes or repairs existing electrical ballasts, outlets and switches.