Test electrical circuits or components for continuity, using electrical test equipment.

Comply with all applicable standards, policies, or procedures, such as safety procedures or the maintenance of a clean work area.

Study blueprints, design specifications, or manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of components.

Discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions.

Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.

Adjust system controls to settings recommended by manufacturer to balance system.

Recommend, develop, or perform preventive or general maintenance procedures, such as cleaning, power-washing, or vacuuming equipment, oiling parts, or changing filters.

Inspect and test systems to verify system compliance with plans and specifications or to detect and locate malfunctions.

Repair or replace defective equipment, components, or wiring.

Install or repair self-contained ground source heat pumps or hybrid ground or air source heat pumps to minimize carbon-based energy consumption and reduce carbon emissions.