Perform preventive maintenance on all base building and critical system equipment which includes but is not limited to: assembling tools, supplies and instruments necessary to complete the job, performing work with a minimum amount of disruption and supervision, conducting immediate clean-up of work area, completing work order task sheets, returning tools neatly to workshop, maintaining supplies inventory, reporting any equipment problems, impending supply or material shortages to Supervisor. Install, repair, replace or rebuild HVAC units, like package units, mini splits, actuators, VAV's, water heaters, motors, heating units, pumps, seals, air compressors, heat exchangers, bearings in all types of motors, piping, valves, filters, hot water systems and associated controls.