What is the primary purpose of a HEPA filter?

A HEPA filter's primary purpose is to capture small particulate matter, specifically particles that are 0.3 micrometers in size or larger, with an efficiency of 99.97%. This capability makes HEPA filters particularly effective in environments where air quality is critical, such as hospitals, laboratories, and workplaces exposed to asbestos. By efficiently trapping tiny particles, HEPA filters help reduce the presence of harmful pollutants, allergens, and pathogens in the air, which is essential for maintaining a safe and healthy environment.

While filtering gases, removing large particles, and enhancing comfort in breathing are important aspects of air filtration, they do not encapsulate the primary function of a HEPA filter. HEPA filters are specifically designed to focus on small particulate matter, which distinguishes them from other types of air filters that might target larger particles or gaseous contaminants.