01

Test pipe or tubing joints or connections for leaks, using pressure gauge or soap-and-water solution.

02

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

03

Repair or replace defective equipment, components, or wiring.

04

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

05

Repair or service heating, ventilating, and air conditioning (HVAC) systems to improve efficiency, such as by changing filters, cleaning ducts, or refilling non-toxic refrigerants.

06

Install, connect, or adjust thermostats, humidistats, or timers.

07

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

08

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.

09

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

10

Install auxiliary components to heating or cooling equipment, such as expansion or discharge valves, air ducts, pipes, blowers, dampers, flues, or stokers.