For those who want to breathe particularly freely at home after vacuuming with the cordless handheld vacuum cleaner CVH 2, the appropriate HEPA 12 high-performance filter (EN 1822:1998) is essential. This filter reliably removes up to 99.5 percent of even the smallest particles of just 0.3 µm, as well as mold spores, bacteria, and allergens such as dust mite droppings and pollen from the air being vacuumed. For optimal results, clean the filter every 2 weeks or replace it every 6 months.