Airborne contaminants are removed from the air stream using industrial HVAC air filters, which are used in commercial HVAC systems. This helps to enhance indoor air quality and prevents pollutants from accumulating in equipment and causing damage. A filter's Minimum Efficiency Reporting Value (MERV) rating indicates how well it removes impurities from the air stream based on the particle sizes it can successfully catch. The greater the MERV value of a filter, the more effectively it captures tiny particles.