The fastest most energy efficient HEPA-filtered hand dryer; the Dyson Airblade 9kJ. The 9kJ hand dryer uses 9.1 kilojoules of energy per dry and costs just £19 a year to run in Eco mode. The fleece-lined glass fibre HEPA filter captures 99.95% of particles, including bacteria and viruses. It features silencers made from open-cell foam and perforated discs, reducing noise as airflow passes through the motor. The V4 digital motor spins 75,000 times a minute to quickly and hygienically dry hands. The curved blade design has 2 x 0.45 mm curved apertures that creates 388 mph sheets of air that follow the contours of your hands, removing water, in less time.