37
Retrofitting of heating, ventilating and air conditioning installations in buildings; Installation, maintenance and repair of air-conditioning apparatus; Retrofitting of heating installations in buildings; Retrofitting of air conditioning installations in buildings; Retrofitting of ventilating installations in buildings; Air duct cleaning services; Repair or maintenance of air-conditioning apparatus [for industrial purposes]; Repair or maintenance of boilers; Repair or maintenance of boilers; Repair or maintenance of air conditioning apparatus; Maintenance and repair of dust extraction apparatus; Maintenance and repair of air conditioning apparatus; Maintenance and repair of ventilating apparatus; Maintenance and repair of heating apparatus; Repair of heating apparatus; Heating equipment installation and repair; Heating equipment installation and repair; Repair of air conditioning apparatus; Repair of ventilating apparatus; Repair of heat recovery apparatus; Air duct cleaning services; Installation of central heating apparatus; Installation of central heating apparatus; Installation of central heating apparatus; Routine servicing of heating apparatus; Routine servicing of air conditioning apparatus; Routine servicing of ventilating apparatus; Routine servicing of dust extraction apparatus; Routine servicing of drying apparatus; Maintenance and repair of heating; Maintenance and repair of heating; Maintenance and repair of solar heating installations; Maintenance of electronic or air conditioning systems; Providing information relating to the repair or maintenance of air conditioning apparatus; Air conditioning vent sealing services; Advisory services relating to the installation of heating and cooling apparatus; Refurbishment of air conditioning plant; Heating contractor services; Installation of central heating apparatus; 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; Installation and repair of air-conditioning apparatus; Installation of apparatus for ventilating; Installation of heating and cooling apparatus; Installation of apparatus for heating; Installation of apparatus for heating; 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 of dust extraction apparatus; Installation of clean room environmental control systems; Installation of environmental control systems; Installation of central heating apparatus; Pipeline installation and repair; Installation of pipework systems; Pipe installation services; Installation of pipe systems for conducting of liquids; Installation of pipe systems for conducting of steam; Maintenance and repair of pipeline systems; Maintenance and repair of pipes used in industrial equipment; Servicing of pipelines; Pipeline maintenance; Installation of pipe systems for conducting of gases; Installation of tubular linings in pipelines; Services for the installation of sewers; Services for the installation of drains; Insulation of pipes; Providing information relating to the repair or maintenance of gas water heaters; Unblocking of drains; Plumbing maintenance advisory services; Plumbing repair advisory services; Plumbing installation advisory services; Services for the lining of pipes; Pipe laying; Maintenance of plumbing; Insulation of pipes; Insulation of pipes; Plumbing; Sewer pipe cleaning; Repair of pipelines by means of encapsulation kits; Repair of water purifying apparatus; Emergency servicing of water supply apparatus; Services for the repair of pipes; Pipe laying; Insulation of pipes; Pipe laying; Pipe laying; Maintenance and repair of pipeline systems; Maintenance and repair of pipelines; Water supply installations maintenance; Sewer pipe maintenance; Pipeline laying; Sewer pipe servicing; Services for the repair of drains; Services for the repair of drains; Services for the repair of pipelines; Sewer pipe renovation; Pipeline laying; Pipeline laying; Pipeline laying; Maintaining and repair of drain pipes; Maintenance and repair of pipelines; Renovation of plumbing; Renovation of underground pipes; Installation of washroom apparatus
42
Civil engineering planning services; Assessment in the field of technology provided by engineers; Engineering consultancy services; Engineering project studies; Design services relating to civil engineering; Engineering consultancy relating to testing; Engineering consultancy relating to design; Technical consulting in the field of environmental engineering; Engineering design and consultancy