4322
Installation of Water Supply (Plumbing), Heating, and Cooling Systems
This subgroup includes installations within buildings or other construction projects, such as plumbing, heating, and cooling systems installation. It includes additions, alterations, repairs, and maintenance. This subgroup includes: - Installation of heating systems (electric, gas, and oil). - Installation of furnaces, cooling towers. - Installation of non-electric solar energy collectors. - Installation of ventilation, air conditioning, or refrigeration equipment and ductwork. - Installation of gas pipelines. - Installation of steam pipelines. - Installation of fire sprinkler systems. - Installation of irrigation sprinkler systems. - Plumbing installation (including ductwork). This subgroup does not include: - Installation of electric baseboard heating, see 4321.
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