Plumbing, heat and air-conditioning installation
Activity Number: 4322

This class includes the installation of plumbing, heating and air-conditioning systems, including additions, alterations, maintenance and repair.

This class includes:

  • Installation in buildings or other construction projects of:
    • Heating systems (electric, gas and oil)
    • Furnaces, cooling towers
    • Non-electric solar energy collectors
    • Plumbing and sanitary equipment
    • Ventilation, refrigeration or air-conditioning equipment and ducts
    • Gas fittings
    • team piping
    • Fire sprinkler systems
    • Lawn sprinkler systems
  • Duct work installation

This class excludes:

  • Installation of electric baseboard heating, see 4321
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