11
Heating, ventilating, and air conditioning and purification equipment (ambient)
35
Business assistance, management and administrative services; Advertising, marketing and promotional services
37
Air conditioning vent sealing services; Advisory services relating to the installation of heating and cooling apparatus; Refurbishment of air conditioning plant; Installation, repair and maintenance of heating equipment; Installation, repair and maintenance of air reheaters; Air conditioning contractor services; Installation and repair of air-conditioning apparatus; Heating equipment installation and repair; Heating contractor services; Installation of apparatus for ventilating; Installation of heating and cooling apparatus; Installation of apparatus for heating; Installation of apparatus for air-conditioning; Installation of air conditioning apparatus for use in clean rooms; Installation of ventilation and dust extraction systems; Installation of clean room systems; Installation of solar heating systems; Installation, maintenance and repair of air-conditioning apparatus; Retrofitting of air conditioning installations in buildings; Retrofitting of ventilating installations in buildings; Retrofitting of heating, ventilating and air conditioning installations in buildings; Maintenance and repair of ventilating apparatus; Maintenance and repair of heating apparatus; Maintenance and repair of air conditioning apparatus; Repair or maintenance of air conditioning apparatus; Repair of heating apparatus; Repair of air conditioning apparatus; Routine servicing of heating apparatus; Routine servicing of air conditioning apparatus; Routine servicing of ventilating apparatus; Maintenance of electronic or air conditioning systems; Providing information relating to the repair or maintenance of air conditioning apparatus