Perform a variety of activities to weatherize homes and make them more energy efficient. Their duties include repairing windows, insulating ducts, and performing heating, ventilating, and air conditioning (hvac) work. They perform energy audits and advise clients on energy conservation measures.

Install or repair solar energy systems designed to collect, store, and circulate solar heated water for residential, commercial or industrial use.

Lay out, cut, and place segmental paving units. Includes installers of bedding and restraining materials for the paving units.

Identify, remove, pack, transport, or dispose of hazardous materials, including asbestos, lead based paint, waste oil, fuel, transmission fluid, radioactive materials, or contaminated soil. They are generally required specialized training and certification in hazardous materials handling or a confined entry permit. They operate earth moving equipment or trucks.

Inspect structures using engineering skills to determine structural soundness and compliance with specifications, building codes, and other regulations. Their inspections may be general in nature or may be limited to a specific area, such as electrical systems or plumbing.

Help plumbers, pipefitters, steamfitters, or pipelayers by performing duties requiring less skill. Their duties include using, supplying or holding materials or tools, and cleaning work area and equipment.

Help electricians by performing duties requiring less skill. Their duties include using, supplying or holding materials or tools, and cleaning work area and equipment.

Help carpenters by performing duties requiring less skill. Their duties include using, supplying or holding materials or tools, and cleaning work area and equipment.

Assemble, install, or maintain solar photovoltaic (pv) systems on roofs or other structures in compliance with site assessment and schematics. They include measuring, cutting, assembling, and bolting structural framing and solar modules. They perform minor electrical work such as current checks.

Fabricate, assemble, install, and repair sheet metal products and equipment, such as ducts, control boxes, drainpipes, and furnace casings. They set up and operate fabricating machines to cut, bend, and straighten sheet metal. They use hammers to shape metal over anvils or blocks. They operate welding equipment to join, fix and smooth burred surfaces.