Independently perform skilled tasks in troubleshooting, operating, replacing, repairing, and maintaining of commercial air conditioning and heating systems, water treatment, controls, and all other building mechanical, electrical, and plumbing systems in one or more properties. Operate and monitor automation systems, logs, system measures, and alarms to identify and resolve problems and anomalies outside of normal operating parameters; adjust systems as appropriate; and record and report all faults, deficiencies, and other unusual occurrences.