Blocked filters will reduce the suction in your vacuum cleaner. Cleaning and replacing your filters regularly will help to maintain its best performance. This Hygiene Filter™ filter captures even the finest particles e. g. pollen, mould spores, dust mite faeces and allergens. It purifies the air which reduces the risk of allergic reactions. Maintaining a dust-free environment will enable everyone in your family to breathe easier and feel better. The high grade of material, used for our genuine filters, provides your vacuum cleaner with strong airflow and high suction power as well as a high filtration level and maximum dust retention. We recommend that filters should be replaced at least twice a year or when they become visibly soiled.