The United States Department of Energy defines HEPA as High-efficiency particulate air (filter). These filters are specifically designed to remove airborne "most penetrating particles" (MPPs) with a diameter of 0.1-0.3 µm. HEPA filters are classified into efficiency classes, which range from E10 to H14.

Difference of HEPA13 and HEPA14 are as follow:

HEPA class	Retention rate (total)
HEPA 13	>99.95%
HEPA 14	>99.995%

 

Pre-filter

The primary filtration uses an aluminum alloy-filter located in the pre-filter for filtering dust larger than 5 µm, including large dust particles, dander, pollen, floating debris, and other pollutants. It can be washed many times and used repeatedly.

Catalyst Filter

The "cold" catalyst added ensures a safer decomposition reaction, which now does not require UV rays, high temperature, or high pressure. In living environments, it can play a catalytic effect in controlling air pollution.

The main components of the "cold" catalyst are also found in food additives and pharmaceuticals. It is non-toxic, non-corrosive, and non-flammable. Under normal temperature conditions, the catalytic reaction can remove formaldehyde, benzene, xylene, TVOC, and other harmful gasses. The reaction creates water and carbon dioxide. It does not produce any secondary pollution. It is a safe and environmentally friendly product on the cutting edge, suitable for a healthy home.

The catalyst itself is not directly involved during the catalytic reaction and does not change nor get used up. Hence, this filter is effective for more than five years without any external damage.

(Activated) carbon filter 

The carbon filter inside our products features good adsorption properties due to its porous structure, which gives it a large surface area. So toxic substances and organic solvents adhere to its surface and can be filtered better.

Formaldehyde Filter

The carbon filter inside our products features good adsorption properties due to its high porosity structure, giving it a large surface area. Consequently, toxic substances and organic solvents adhere to its surface and can be filtered better.

Antibacterial Cotton Filter

The antibacterial filter catches all particles with a diameter larger than 5 µm. It is coated with a special antibacterial agent that removes at least 99% of airborne germs.

Sterilizing UV light

UV light has a disinfectant effect. Therefore another large number of germs can also be killed during UV sterilization. Besides reducing unpleasant odors in the air, it decreases the spreading of viruses and germs in the air or on surfaces. The UV radiation spectrum is divided into UVA, UVB, and UVC, whereby only UVC has sterilizing property. However, UVC rays always generate some ozone as a byproduct. Exceeding a specific concentration is harmful to one's health! Besides, UVC attacks a large number of plastics, which can then become porous over time.

Anion Purifier

Anions, which are negatively charged particles, are released into the air and combine with positively charged dust, smoke, bacteria, and viruses. As a result, freely floating nano-particles clump together and form larger units, which is filtered better. 

Please note that these figures are general representations of potential use case scenarios. Not only the room size is decisive, but also the number of people in it and their activities!