Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; air conditioning, heat pumps, heating, refrigeration and ventilation equipment, including air conditioning and temperature control equipment, cooling towers, condensers, cool room units, water coolers, heat transfer coils, convection and radiant heaters, fans, humidifiers, heat pumps and fan coil units; refrigerating or cooling apparatus and machines; elements in this class, including heating elements, cooling elements; parts, fittings, and accessories for the aforesaid goods