Perfect drying results thanks to mineral sensors: with the patented PerfectDry System, your laundry is dried "precisely", even if the water in your catchment area is very hard. This is by no means the norm for tumble dryers. Calcium and other minerals in the water influence residual moisture sensing – and in turn have an impact on drying results. "With PerfectDry, mineral sensors record the amount of calcium in the water and adjust the drying process for precise results." This ensures that your laundry is not too dry or too wet. Your chosen drying level is always achieved.