The filter has a multi-stage construction. The prefilter is responsible for the coarse particles and the main filter for viruses, bacteria, allergens, particular matter and pollutants. The filter can optionally be equipped with activated carbon to filter out odors and noxious gases such as formaldehyde.
Hengst filters are designed so that optimized differential pressure results in higher efficiency and therefore lower energy consumption. At the same time, Hengst high-quality filters ensure excellent CADR (clean air delivery rate) and CCM (cumulate clean mass) ratings.
All filters are available as HEPA filters according to ISO 29463 (formerly EN 1822).