Mechanical Work
C-4 Boiler, Hot Water Heating & Steam Fitting Contractor:
A specialty contractor whose contracting business is the execution of contracts requiring the
ability to intelligently install fire-tube and water-tube power boilers and hot water heating
boilers, including all fitting and piping, valves, gauges, pumps, radiators, convectors, fuel/oil
tanks, fuel/oil lines, chimneys, fuels, heat insulation and all other devices, apparatus and
equipment pertinent thereto.
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C-20 Fire Protection Contractor:
A specialty contractor whose contracting business is the execution of contracts requiring the
ability to intelligently layout, fabricate and install approved types of fire prevention and
protection systems including all mechanical apparatus, devices, piping and equipment
appurtenances thereto except electrical devices, apparatus and wiring which shall be
installed by specialty contractors in the classifications C-13 or C-15. The licensee shall have
the ability to comply with applicable provisions of the NBFU Standards to meet all
requirements of the local authorities having jurisdiction.
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C-37 Plumbing Contractor:
A specialty contractor whose contracting business is the execution of contracts requiring the
ability to intelligently install water supply piping systems, waste water piping systems and
fuel gas piping systems; within such structures and works where people or animals live, work
and /or assemble.
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C-40 Refrigeration Contractor:
A specialty contractor whose contracting business is the execution of contracts requiring the
ability to intelligently construct, erect and install devices, machinery and units including
temperate insulation units, ducts, blowers, registers, humidity and thermostatic controls for
the control of air temperature below fifty degrees Fahrenheit in refrigerators, refrigerator rooms
and insulated refrigerator spaces.
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C-51 Warm Air Heating, Ventilating & Air Conditioning Contractor:
A specialty contractor whose contracting business is the execution of contracts requiring the
ability to intelligently fabricate and install warm air heating and cooling systems, complete air
conditioning systems, except those air conditioning systems requiring refrigeration as an integral
part of the system.