This work activity involves the installation, maintenance and tear down of HVAC systems, and decorative metal, and other sheet metal systems. Specific tasks include, for example, drilling and cutting metal, welding, applying sealants, assembling fittings, fastening seams and joints, and installing heating duct hangers. This database includes an analysis of the hazards associated with these tasks, as well as practical measures for making such work safer.

• Apply caulk, cement and mastic sealants
• Assemble fittings and fasten seams and joints using hand and power tools
• Clean, remove and repair existing ductwork and HVAC
• Cut, file, grind, deburr, buff and smooth assembled parts
• Install heating and air conditioning duct hangers and ductwork
• Install risers
• Layout, shear, drill and punch holes in metal
• Operate laser cutter and metal shearing machine
• Operate metal press, hand brake and forming machines
• Rig and set HVAC equipment with cranes, helicopters, hoists and lifts
• Shape metal material over anvils, blocks or other forms
• Unload and stock metal sheets and coils
• Weld, braze and solder seams and joints