Is a High-Quality Air Filter Enough?
Although using a high-quality air filter is certainly a good idea, remember that air filters can only remove larger particles from the air. Things like pet hair, pet dander, dust, and other debris are trapped within the filter, so they can't make their way into your home or business.
When changed regularly, they do help improve your indoor air quality to an extent. They cannot, however, remove microbes such as mold spores, bacteria, and viruses. These particles are simply too small to be caught by the filter.