Statistical Classification of Economic Activities NACE Rev. 2.1

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

This class excludes:
- installation of electric baseboard heating, see 43.21

This class includes:
- construction activities specialising in one aspect common to different kind of structures, requiring specialised skill or equipment:
construction of foundations, including pile driving
damp proofing and water proofing works
de-humidification of buildings
shaft sinking
erection of steel elements
steel bending
bricklaying and stone setting
scaffolds and work platform erecting and dismantling, excluding rental of scaffolds and work platforms
erection of chimneys and industrial ovens
work with specialist access requirements necessitating climbing skills and the use of related equipment, e.g. working at height on tall structures
- subsurface work
- construction of outdoor swimming pools
- steam cleaning, sand blasting and similar activities for building exteriors
- rental of cranes and other building equipment, which cannot be allocated to a specific construction type, with operator

This class excludes:
- rental of construction machinery and equipment without operator, see 77.32