A professional who inspects, tests, adjusts, and balances heating, cooling, and ventilating systems in residential, commercial, and industrial buildings, using specialized tools and test equipment, to attain performance standards specified in system design. Responsibilities include:

• Studies system blueprints, specifications, and performance data to determine configuration and purpose of system components, such as motors, pumps, fans, switches, ducts, or pipes.
• Discusses system malfunctions with users to isolate problems.
• Inspects system to verify system compliance with plans and specifications and to detect malfunctions in system component parts.
• Adjusts system controls to settings recommended by vendor to prepare to perform tests.
• Tests performance of air and hydronic systems, using specialized tools and test equipment, such as pitot tube, manometer, anemometer, velometer, tachometer, psychrometer, and thermometer, to isolate problems and determine where adjustments are necessary.
• Opens or closes louvers in system ductwork or adjusts flow control valves in piping to balance system, using handtools such as pliers, screwdriver, or wrenches.
• Discusses system operation with users to verify that malfunctions have been corrected.