The hoover filter filters the smallest dust particles from the air and is suitable for the Boost CX1 hoover. Cleaning is simply done by tapping out or rinsing the filter. The pleated material retains the finest dust particles. The Miele AirClean filter system, consisting of the original Miele hoover bag, the motor protection filter and one of the original Miele exhaust air filters, ensures maximum hygiene. The fine dust load in the room air is significantly reduced as the interaction of all components enables the filtration of more than 99.9 % of the fine dust. After vacuuming, the room air is even cleaner than before. With Miele, you can choose between three different exhaust air filters. The Miele Active AirClean filter additionally reduces unpleasant odours and is ideal for pet owners or households with smokers. Some original Miele filters are equipped with a timestrip. This new type of change indicator, which is attached directly to the filter, is activated by pressing firmly on the arrow when the filter is inserted into the appliance. If the bar is completely coloured red, the filter is saturated and must be replaced. The timestrip helps you to monitor the optimum function of your filter. The HEPA AirClean filter even filters fine dust and allergens and is ideal for house dust allergy sufferers. The timestrip shows you when the filter should be changed. The Active HEPA filter retains even the smallest particles and also contains an activated carbon layer to filter out unpleasant odours.