Many international HVAC/R organizations promulgate standards for the air filtration industry, and many of these standards become part of a national building code. For the most part, these codes dictate “minimum standards” that must be met to be in compliance with the code. NAFA publishes a series of air filtration best practice guidelines based on these codes, but that go further to recommend and incorporate the “highest level of air filtration standards” for specific applications.

  • Airborne Infections Containment Rooms in Health Care Facilities

    This best practice guideline establishes criteria for using air filtration in the removal of airborne infectious pathogens from hospital containment rooms for the purpose of protecting staff, patients and visitors from nosocomial infections.

  • Commercial Offices

    This best recommended practice establishes air filtration guidelines for the removal of particulate contamination for the protection of the air handling equipment and components, as well as providing comfort and a healthy environment for all who work, visit, live and play in these facilities. The recommendations in this guideline are considered by NAFA to be “best practice” in contrast to “minimum standards” as put forth by other organizations. It will serve to provide owners and facility managers with the necessary information to make educated decisions when providing filtration products for their building, and an essential component of their Indoor Air Quality (IAQ) and life safety program.

  • Firing Ranges

    This best recommended practice establishes air filtration guidelines for the removal of airborne contaminants for the protection of employees and participants in indoor firing ranges.

  • Higher Education Complexes

    This best practice air filtration guideline is established for the removal of particulate and molecular contaminants (please refer to NAFA Guidelines for Molecular Filtration) for the improvement of indoor air quality and protection of HVAC equipment in Higher Education facilities. It serves to provide the facility managers with the necessary tools to make measurable differences to the operation of HVAC systems in their campus through air filtration.

  • Libraries, Archives & Museums, English
    Libraries Archives & Museums, Spanish

    This best recommended practice establishes air filtration guidelines for the removal of particulate and gaseous contaminants for the protection and long-term preservation of historical documents and artifacts. The recommendations in this guideline are considered by NAFA to be “best practice” in contrast to “minimum standards” put forth by other organizations. They serve to provide the conscientious Facility Manager with the necessary guidelines to make measurable differences of air quality in his/her building.

  • Molecular Filtration

    This best practice guideline is designed to provide a general overview of how best to apply molecular filtration in HVAC applications where the need to remove gaseous airborne contaminants exists.

  • Schools Guideline

    This best practice air filtration guideline is established for the removal of particulate and molecular contaminants for the improvement of indoor air quality and protection of HVAC equipment in K-12 schools. It serves to provide the facility managers with the necessary tools to make measurable differences to the operation of the HVAC systems in their campus through air filtration.

  • Spray Finishing Particulate Guideline

    This best recommended practice establishes air filtration and spray collection guidelines for the removal of airborne contaminants for the protection of the employees, equipment, and environment in commercial and industrial spray booths.

  • Welding Fumes

    This best practice establishes air filtration guidelines for the removal of particulate and gaseous contaminants from the immediate breathing zone of employees engaged in the process of welding. Filtration guidelines for general ventilation, when applicable, are also addressed.