Heating, Air Conditioning, and Refrigeration Mechanics and Installers:

Install attachments to machinery or related structures
Install machine or equipment replacement parts
Install hardware or other interior fixtures
Install electrical fixtures or components
Install electrical conduit or tubing
Install lead-in wires to control boxes and other components
Install household appliances
Install/Replace measuring or control devices such as meters or regulators
Install electrical or electronic cables or wiring
Install electronic equipment, components, or systems
Bend pipe for gas, air, hydraulic, refrigeration or water lines
Set mechanical or electrical controls or components
Adjust equipment to ensure optimal performance
Adjust measuring or control devices
Operate pipe fitting equipment
Bend tubing or conduit
Adjust industrial, manufacturing, or production equipment
Solder metal parts, piping, or components
Braze metal parts or components
Weld metal parts and components
Solder electrical or electronic connections or components
Perform combination welding or cutting procedures
Weld metal structures
Disassemble equipment to inspect for deficiencies
Assemble equipment or components
Assemble mechanical components or machine parts
Reassemble equipment after repair
Install plumbing, piping, or water handling systems
Perform basic plumbing
Cut materials according to specifications or needs
Cut pipe or piping material for gas, air, hydraulic, refrigeration, water, or steam lines
Drill holes in parts, equipment, or materials
Dismantle/Reassemble rigging
Thread pipe for gas, air, hydraulic, refrigeration, or water lines
Install heating, ventilation, or air conditioning (HVAC) equipment
Position machines, equipment, or structures
Connect electrical components or equipment
Perform basic carpentry
Assemble/Disassemble manufactured mechanical products, engines, or machinery by hand

Overhaul industrial or construction machinery or equipment
Conduct tests to locate mechanical system malfunction
Perform preventative maintenance on manufacturing equipment
Level machines, equipment, or structures
Align machines, equipment, or structures
Replace gas, steam, sewer, or water piping or fixtures
Replace malfunctioning or worn mechanical components
Repair pipes to stop leaking
Adjust clearances of mechanical or electrical components or parts
Clean installation, maintenance, or repair tools, equipment, or machinery
Repair gas, steam, oil, sewer, or water piping or fixtures
Repair mechanical controls
Repair measuring or control devices
Repair work tools or equipment
Repair mechanical equipment or machinery
Maintain welding machines or equipment
Maintain work tools or equipment
Lubricate machinery, equipment, or parts
Maintain manufacturing or production equipment
Calibrate mechanical equipment or instruments to specification
Repair specialized rigging
Repair malfunctioning or worn mechanical components

Conduct energy audits
Test mechanical products or equipment
Test electrical circuits or components for proper functioning
Test piping systems or equipment for leaks under pressure
Conduct performance testing
Test mechanical systems to ensure proper functioning
Test electrical or electronic systems or equipment
Test operation of malfunctioning machinery
Test electrical or electronic wiring or fixtures
Inspect installation, maintenance, or repair machinery or equipment
Inspect mechanical systems to determine if they are operating properly
Inspect facilities to determine repair or replacement needs
Perform installation, maintenance, or repair related safety inspection
Test ambient levels of air quality, noise, or temperature
Inspect completed repair work to ensure proper functioning