what is the difference between hepa and true hepa filters?
Essentially, True HEPA air purifiers captures up to 99.97 percent of particles as small as 0.3 microns, which include a range of allergens and odors. On the other hand, a purifier with a HEPA Type filter is capable of capturing 99 percent of particles that are 2 microns or larger, such as pet dander and dust.