Installation of plumbing, heating (non-electric) and air-conditioning systems

This Sub-class includes the installation of plumbing, heating and air-conditioning systems, including additions, alterations, maintenance and repair. Units in this Sub-class are primarily engaged in one or more of the following: •installation of heating systems (electric, gas and oil) •installation of non-electric solar energy collectors •installation of plumbing, sanitary and/or sewerage equipment •installation of ventilation, refrigeration and/or air-conditioning equipment and/or ducts •installation of gas fittings •installation of steam piping •installation of fire sprinkler systems •installation of lawn sprinkler systems •installation of duct work installation

•manufacture of domestic appliances, see 2750 •manufacture and repair of refrigerating, air-conditioning and ventilating machinery and equipment except household refrigerators, see 28191 •installation of electric baseboard heating, see 43210 •installation of non-water sprinkler system, see 43292 •retail sale of household electrical appliances and equipment, see 47535 •repair of domestic electrical/electronic appliances except audio and video equipment, see 95220