Heating, Air Conditioning, and Refrigeration Mechanics and Installers:

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

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

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