The Normat Hepa is a sort of filter, made to trap many several harmful particles of the air. It is finer than the vacuum cleaner that just simply recirculate the impure air back into your home. This unit is essential for minimizing dust, scurf and many other allergens found in homes and make way for allergic as well as respiratory conditions. The full form of HEPA is high-efficiency particulate air and this it suffices as a mechanical air filter that works with the assistance of its fine mesh . It can remove pollen, dust mites, pet dander, and tobacco fume an others, which pollute the air.