Air conditioning apparatus; Air conditioning installations; Air conditioning units; Air cooling apparatus; Air purifying apparatus and machines; Air reheaters; Air sterilisers; Air valves for steam heating installations; Apparatus for dehydrating food waste; Apparatus for heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; Central heating radiators; Central heating systems; Cooling installations and machines; Dehumidifiers; Drying apparatus and installations; Electric fans for personal use; Electric heaters for commercial use; Electric radiators; Filters for air conditioning;