Solar cells for current generation; photovoltaic modules and systems including control and regulation equipment as safety units; current converters and inverters, in particular for photovoltaic systems or fuel cells; generating plant and equipment with fuel cells or photovoltaic modules as energy source, included in this class; glass covered with an electric conductor; control and regulation equipment, included in this class; remote control devices; display units (electrical); anodes

Fittings for heating systems, thermal and/or electrically operated, except for measuring devices; fittings for water pipes made of metal, metal alloys or plastic; taps; pipeline systems for water; thermostatic valves as parts of heating installations; pipe coils as parts of distillation, heating or cooling systems; instantaneous and tankless water heaters; heating flanges; water boiling devices; hot water tanks; pressure water tanks; water heaters; electrical hand dryers; towel dryers (heating); electrical heating apparatus and installations; electrical storage heaters for central or decentralised installation; defrosting devices and systems; central heating systems as well as their components included in this class; stoves; heaters for solid, liquid or gaseous fuels; household electrical heaters; air conditioning devices and systems; air humidification and air dehumidification devices; air filters (air conditioning) and air filter systems, ventilation devices and equipment (air conditioning); heat pumps; heat exchangers and heat recovering equipment; brine distributors (parts of heating systems); solar-powered cooling equipment, in particular adsorption and absorption heat pumps; sun collectors for heating; heating flues and pipes for heating boilers; brackets for gas burners; heating boilers; burners; fuel cells and heating equipment operated by fuel cells; block-type thermal power stations; filters and filtering devices for domestic or commercial systems, in particular for drinking water; cooling units and cooling systems; water treatment equipment; devices and systems for water softening and for the protection against lime scale build-up; water supply and distribution apparatus and systems; water dispensing and mineral water equipment; control and safety accessories for water and gas equipment and for water or gas pipes included in this class

Installation, mounting, maintenance, cleaning and repair of burners, electric appliances, heating systems, air conditioning systems, ventilation systems, cooling systems, machines, stoves, fuel cells, block-type thermal power stations, pumps, water treatment equipment, water dispensing and mineral water equipment, solar systems, photovoltaic systems, heat pumps, current production systems and water heaters as well as accessories and components of these goods; repair information; management/supervision of construction work; shaft or well drilling; rock blasting; disinfection work

Consultancy services, in particular with respect to energy-saving buildings; geological research and preparation of technical and geological surveys; technical and geological project planning; soil analysis of building ground, environmental compatibility investigations