3. Perform tasks related to the plumbing trade: repair and replace plumbing fixtures, including tub, lavatory, sink, stool, urinal, water fountains, garbage disposals, etc. and all hardware necessary to operate these fixtures; install, repair and replace valves, traps, supply lines, seats, stems, and filters; cut and thread pipe, sweat joints, solder, silflos and make glued or mechanical joints in compressed air, gas, steam, drainage, condensate return or fluid handling lines as required; perform preventative maintenance, installation, repair, cleaning and removal on all systems such as pumps, receivers, ice machines, water softeners, coils, hot water generators, hydronics, radiation, water treatment, filtering, heating, water heating, sewage, ejector, backflow prevention and steam systems; install, repair, remove all supply lines and discharge and return lines for any of the above systems; layout, assemble, and schedule plumbing projects; read and understand measuring instruments, pressure, temperature and vacuum gauges, clean and maintain all University equipment and report any loss or damage to supervisor; perform other related plumbing tasks as needed or assigned. 4. Perform tasks related to the heating, ventilating, and air conditioning trade: repair and/or replace pumps, motors, mechanical devices, pneumatic devices, gauges, valves on heating, air handling, and air conditioning units, and minor duct work; repair leaks in chilled water, steam, water, and pneumatic lines; do preventative maintenance on all equipment to include belts, filters, greasing, bearings, thermocouples, cleaning, painting, adjustment of dampers and controls, and tightening of mechanical fasteners; repair, replace, and perform preventative maintenance on furnaces, gas fired heating boilers, air condition units, water heaters, air handling equipment, steam, hot water, electric, heating and cooling systems, and air compressors; install, repair, and replace window air conditioners, utilize building monitoring systems for troubleshooting and maintenance of energy management systems; and perform other HVAC tasks as needed or assigned.