The Activated Carbon Filter, or charcoal filter, is a bed of activated carbon typically in granular or powdered block from, and consist of millions of tiny absorbent pores. This air filter has been treated to be extremely porous, and this is the popular filtration against gases, chemicals and volatile. It is mostly used in conjunction with the HEPA filter to capture the other tiny particles as well, like dust, lint, mould spores, pet dander and pollen to name a few.
The UV light filter with one of four types of ultraviolet light (UV-A, UV-B, UV-C, and UV-V), is commonly used in air purifiers, or acts as a standalone air sanitizer to kill germs, mould spores, mildew, bacteria and even viruses. Though many air purifier brands have stated that the UV-C light is completely harmless to humans, you must know the nature of UV-C light. The UV-C light filter releases a fair amount of ozone into the air, which is a pollutant and can be harmful from prolonged exposure.