该小组履行以下部分或全部职责：

• 阅读蓝图或工作单规范以确定布局和安装程序
• 测量和标记用于安装的指南
• 使用手动和电动工具安装、维修和维修室内预制产品，例如门、窗、厨房橱柜、浴室梳妆台、热水器和家用电器
• 使用手动和电动工具安装、维修和维修外部预制产品，例如壁板、百叶窗、遮阳篷、围栏、甲板、化粪池和灌溉系统、标志和游乐设施。

• 通常需要一些中学教育。
• 通常需要在职培训和几个月的相关安装、维修或维修经验。
• 可能需要驾驶执照。

• 本单元组中各种类型的安装人员和服务人员之间存在一定的流动性。

• 家电服务商和维修商 ( 72421)
• 蒸汽装配工、管道装配工和喷水灭火系统安装工 ( 72301)
• 中央空调安装工（72402 供暖、制冷和空调技工）
• 承包商和主管、其他建筑行业、安装人员、维修人员和服务人员 ( 72014)

This group performs some or all of the following duties:

• Read blueprints or work order specifications to determine layout and installation procedures
• Measure and mark guidelines to be used for installations
• Install, repair and service interior prefabricated products such as doors, windows, kitchen cupboards, bathroom vanities, water heaters and household appliances using hand and power tools
• Install, repair and service exterior prefabricated products such as siding, shutters, awnings, fencing, decks, septic and irrigation systems, signs and play structures using hand and power tools.

• Some secondary school education is usually required.
• On-the-job training and several months of related installing, repairing or servicing experience are usually required.
• A driver's licence may be required.

• There is some mobility among the various types of installers and servicers in this unit group.

• Appliance servicers and repairers (72421)
• Steamfitters, pipefitters and sprinkler system installers (72301)
• Central air conditioner installer (in 72402 Heating, refrigeration and air conditioning mechanics)
• Contractors and supervisors, other construction trades, installers, repairers and servicers (72014)