7
Heat pumps [parts of machines]; Water heaters [parts of machines]; Compressors for air conditioning apparatus
11
Heat pumps; Heat pumps for energy processing; Storage water heaters; Water heaters [apparatus]; Boilers being parts of central heating installations; Gas fired back boiler units for domestic hot water systems; Gas fired back boiler units for domestic central heating; Gas water heaters for household use; Water heaters for industrial use; Induction water heaters; Heaters for sink water; Convectors [radiators]; Domestic radiators; Convector heaters; Heat generating apparatus; Central heating boilers; Circulators [water heaters]; Electrically heated hot water tanks; Burners, boilers and heaters; Heating, ventilating, and air conditioning and purification equipment (ambient); Air-conditioning apparatus; Air-conditioning installations; Air inductor apparatus [air conditioning]; Ventilation terminals; Window-mounted air conditioning units; Filters for air conditioning; Electric air conditioners; Mobile air conditioning apparatus; Portable air conditioners; Central air conditioning installations; Power filters for airconditioning; Air conditioning for data processing rooms; Residential air conditioning units; Axial fans for air-conditioning; Fans [air-conditioning]; Air filters for air conditioning units; Window air conditioning apparatus; Domestic air conditioning installations; Central type air conditioning apparatus; Electric radiators [not for motors and engines]; Electric space heaters; Electric radiant heaters [for household purposes]; Heating apparatus, electric; Air reheaters; Hot air heating apparatus; Solar thermal collectors [heating]; Radiators for central heating installations; Installations for heating swimming pools; Control devices [thermostatic valves] for heating installations; Swimming pool heaters; Thermal storage instruments [solar energy] for heating; Evacuated heat pipe solar collectors [heat exchangers]; Solar water heaters; Sunlight collecting apparatus for heating purposes; Heating frames; Control units [thermostatic valves] for heating installations; Solar energy powered heating installations; Heat accumulators; Closed circuit heating installations; Hot air apparatus; Hot water apparatus; Heating cartridges; Furnaces for central heating; Oil fired boilers; Hot water installations; Hot water cylinders; Chambered lid furnace; Solar powered ventilation apparatus
37
Repair or maintenance of boilers; Providing information relating to the repair or maintenance of gas water heaters; Installation of apparatus for air-conditioning; Providing information relating to the repair or maintenance of air conditioning apparatus; Repair or maintenance of air-conditioning apparatus [for industrial purposes]; Installation of solar powered systems
40
Generation of electricity from solar energy