Household appliances are assigned to classes based on their energy efficiency. For dishwashers it is important, for example, that cleaning and drying normal dishes with normal soiling do not exceed a specific level of energy consumption. The number of water drops that remain inside the appliance significantly determines the classification into an energy efficiency class.
Plasma coating with hydrophobic characteristics (plasma polymerization) makes an important contribution here. Because of the lower surface tension of the hydrophobic functional coating, water drops flow reliably from the walls, dishes, and silverware bin, and the drying process is measurably shortened.