HEPA stands for High-Efficiency Particulate Air. It refers to a type of air filter that is designed to trap at least 99.97% of airborne particles as small as 0.3 microns in diameter. These filters are highly effective at capturing dust, pollen, mold, bacteria, and other fine particles, making them essential in environments where air quality is critical, such as hospitals, laboratories, cleanrooms, and homes with allergy sufferers.
To meet HEPA standards, a filter must comply with rigorous testing and certification processes set by organizations like the U.S. Department of Energy (DOE) or equivalent regulatory bodies. HEPA filters are commonly used in vacuum cleaners, air purifiers, HVAC systems, and other cleaning equipment to ensure thorough removal of contaminants.