A pre-filter is a filtering device that removes large particles from the air before it reaches the main filter, including dust, hair, insects, pollen, and various fibers. Air purifying equipment outfitted with pre-filters are used in buildings, transports, public areas, and in various workplaces.
Pre-filters are used in conjunction with secondary filters and give your HVAC system an advantage over a system without them. The job of a pre-filter is to protect the secondary filter by capturing the larger dust particles, giving longevity to the more expensive secondary and final filters.
A pre-filter’s purpose is to capture larger particles like dust and hair, preventing them from clogging the HEPA filter. Of course, HEPA filters have no problem capturing these large particles, so the pre-filter will NOT increase the effectiveness of the purifier.
