
14. The Austin Air Healthmate air purifier offers users a four-stage filtration system.
This particular air purifier model uniquely has four-stage filters that include a HEPA filter with a 60-square-foot radius. Each of the four filters works to remove a different type of particle at each layer. The first large particle pre-filter removes particles easily seen by the naked eye, such as dust, hair, and pet dander. The second layer is the medium particle pre-filter that removes small to medium-sized particles such as mold, spores, and pollen.
Its third layer includes about 15 pounds of activated carbon and zeolite that works to remove chemicals, gases, and odors in your home. The final layer includes 60 square feet of certified HEPA filter, removing 99 percent of all particles larger than 0.3 microns. The four-stage filtration provides a complete spectrum of air cleaning, removing sub-micron particles, noxious gases, and chemicals. It’s important to note that this model is much larger and heavier than others, weighing 45 pounds. However, it does include rollers on the bottom for easier transportation.