Plumbing, heat and air-conditioning installation

43.22
Plumbing, heat and air-conditioning installation
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 and air-conditioning equipment and ducts
  • gas fittings
  • steam piping
  • fire sprinkler systems
  • lawn sprinkler systems
- duct work installation
Installation of heat exchanger systems
This class excludes:
- installation of electric baseboard heating, see 43.21