So that dust stays safely enclosed

Thus, the dust stays safely enclosed.
The Miele AirClean filter system consists of the original Miele dustbag, the motor protection filter and one of the original Miele exhaust filters. These three filtration stages ensure that vacuumed-up dust remains securely locked in. The room air is even cleaner after vacuuming than before and it takes longer for dust to settle again on furniture and surfaces.
AirClean filter
Filtration for day-to-day needs.In combination with the HyClean vacuum cleaner bag and motor filter, overall dust retention capacity is more than 99.9 % *
Active AirClean filter
Ideal for households with pets or smokers. Unpleasant odours are significantly reduced.*
HEPA AirClean filter
Solution for allergy sufferers and households with small children. Catches 99.95 % of all viruses, germs and particles. HEPA class 13 according to DIN EN 1822/2011 HEPA is achieved.
Our recommendation for people with allergies
People with house dust allergies should look for a vacuum cleaner with a HEPA filter fitted as standard and specially sealed casing. These appliances ensure that the filtered air discharged from the vacuum cleaner is cleaner than ambient room air before vacuuming. Based on these characteristics, some Miele vacuum cleaners are specifically recommended for people with allergies by TÜV Nord, a German material testing institute. In order for the appliance to maintain high filtration performance throughout its service life, the saturated, clogged HEPA filters must be replaced regularly – about once per year.
 Silence AirClean filter
Noticeable reduction of suction and motor noises. Silencer for vacuum cleaner.
According to IEC 62885-2 when using Miele appliances fitted with AirClean filter systemAccording to DIN EN 13725 Figures as examples for showing the product benefit