HEPA air filters
How do air purifiers work—and which is the best air purifier around? The answer is in the quality of the filters. The human eye can detect items around 25 microns in size. Dust, pollen, and mold are about 10 microns, while smoke particulates, bacteria, and viruses are much smaller, ranging between 0.3-1 micron, and sometimes even smaller. Though these pollutants cannot be seen by the naked eye, breathing them in can cause a range of health issues, including allergies, asthma, and more. HEPA (High Efficiency Particulate Air) filters help to protect your lungs by capturing airborne particulates. Larger particles are caught while passing over the outer HEPA layer, while smaller particles are pulled further into the filter, becoming lodged within the tightly-woven fibers. These unique fibers also create static electricity, which works to pull particulates into the air purifier filter as they pass nearby. The best air purifiers for pets, smoke particulates, airborne mold, and dust reduction will include a woven HEPA or HEPA-type filter.