2021 NFPA 90A Standard - Current Edition
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  • Description

    Get the requirements you need to help ensure appropriate fire protection for HVAC systems with NFPA 90A.

    NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, has been providing information and criteria vital to safety in the built environment since first developed back in 1899. This ANSI-approved standard for heating, ventilation, and air conditioning covers provisions for stopping the migration of smoke and reducing the chance of fire, gases, and related hazards in forced air systems.

    From general definitions and requirements to the integration of ventilation and air-conditioning with building construction, controls, and acceptance testing, NFPA 90A is a valuable resource for helping to protect lives and property and staying up to code. You get complete information on all areas of construction, operation, and maintenance of systems, including filters, ducts, and other equipment.

    Apply the most current provisions to confirm sufficient building and life safety.

    NFPA 90A offers criteria for buildings over 25,000 cubic feet and buildings more than three stories in height classified as Types III, IV, and V construction. The standard also applies to buildings or structures not covered by any applicable NFPA standards. The 2021 edition features a variety of editorial changes and updates to existing language.

    Take confidence you are referencing the most relevant information for helping to keep HVAC systems fire safe.

    Get up-to-date with the latest requirements by ordering your copy of NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2021 edition.

  • Table of Contents (2021 Current Edition)

    NFPA® 90A Standard for the Installation of Air-Conditioning and Ventilating Systems, 2021 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose.
    1.3 Application.
    1.4 Retroactivity.
    1.5 Equivalency.
    Chapter 2 Referenced Publications
    2.1 General.
    2.2 NFPA Publications.
    2.3 Other Publications.
    2.4 References for Extracts in Mandatory Sections.
    Chapter 3 Definitions
    3.1 General.
    3.2 NFPA Official Definitions.
    3.3 General Definitions.
    Chapter 4 HVAC Systems
    4.1 General Requirements for Equipment.
    4.2 System Components.
    4.3 Air Distribution.
    4.4 Materials.
    Chapter 5 Integration of a Ventilation and Air-Conditioning System(s) with Building Construction
    5.1 Air-Handling Equipment Rooms.
    5.2 Building Construction.
    5.3 Penetrations — Protection of Openings.
    5.4 Fire Dampers, Smoke Dampers, and Ceiling Dampers.
    Chapter 6 Controls
    6.1 Wiring.
    6.2 Manual Control.
    6.3 Smoke Dampers.
    6.4 Smoke Detection for Automatic Control.
    Chapter 7 Acceptance Testing
    7.1 General.
    7.2 Fire Dampers, Smoke Dampers, and Ceiling Dampers.
    7.3 Controls and Operating Systems.
    Annex A Explanatory Material
    Annex B Maintenance
    Annex C Informational References
  • How the NFPA Handbooks Differ from Codes and Standards

    THE NFPA HANDBOOKS DIFFER FROM CODES AND STANDARDS

    Ever wonder what the difference is between an NFPA® handbook and a code or standard? We’re glad you asked.

    NFPA codes and standards both provide requirements for achieving outcomes. Handbooks take a deeper dive, providing the full text of a code or standard as well as expert commentary and features such as graphics, decision trees, testing procedures, case studies, sample forms and checklists, and other helpful aids to give a better understanding of the reasoning behind the requirements and how to apply them.

    JUST REMEMBER:

    • A code or standard is a framework—a set of rules to follow with a goal to achieve a certain result
    • A handbook is a connector—linking requirements to application by helping you understand the reasoning behind a code or standard

    The simplest way to think about it is that codes and standards list the technical requirements while handbooks explain those requirements to clarify how to apply them.

  • 2018 Edition Description

    The 2018 edition of NFPA 90A, Installation of Air-Conditioning and Ventilating Systems is essential for providing adequate fire protection for HVAC systems and protecting lives and property in the built environment.

    NFPA 90A is the ANSI approved standard of care for HVAC to safeguard people and property against fire, smoke, and gases resulting from fire or similar conditions. Updated for greater clarity and the latest references to applicable NFPA® codes and standards and other documents, it addresses every aspects of the construction, operation, and maintenance of air conditioning and ventilating systems -- including filters, ducts, and related equipment.

    Designers, contractors, and owners gain greater assurance in fire protection by using the latest provisions.

    Requirements are used to prevent the migration of smoke and reduce the potential for fire in forced air systems in buildings that are over 25,000 cubic feet or Types III, IV, and V construction over three stories in height. It also applies to other buildings and structures not covered by other applicable NFPA standards.

    NFPA 90A addresses:

    • HVAC systems, components, and air distribution
    • Integration of a ventilation and air-conditioning system(s) with building construction
    • Controls including wiring, manual control, smoke dampers, and smoke detection for automatic control
    • Acceptance testing – including an option for testing flame spread of plastic pipe for use in plenums that's new for the 2018 edition.

    Apply the latest safeguards using NFPA 90A.

    NFPA 90A plays an integral role in providing adequate fire protection in today's buildings. Stay up-to-code and keep HVAC systems fire safe. (Print, Approx. 25 pp., 2018)

     

    Interested in other editions of NFPA 90A? Use the drop down menu above to select the edition year you need.

  • Prior Editions

    2015 Edition

    The 2015 NFPA 90A: Installation of Air-Conditioning and Ventilating Systems is essential for providing adequate fire protection in today's buildings.

    Use the industry-approved standard of care for HVAC to protect life and property from fire, smoke, and gases resulting from fire or similar conditions. NFPA 90A addresses every aspect of the construction, operation, and maintenance of air conditioning and ventilating systems -- including filters, ducts, and related equipment.

    Designers, contractors, and owners gain greater assurance in fire protection by using the latest provisions.

    Requirements are used to prevent the migration of smoke and reduce the potential for fire in forced air systems in buildings that are over 25,000 cubic feet or Types III, IV, and V construction over three stories in height. It also applies to other buildings and structures not covered by other applicable NFPA® standards.

    NFPA 90A addresses:

    • HVAC systems, components, and air distribution
    • Integration of a ventilation and air-conditioning system(s) with building construction
    • Controls including wiring, manual control, smoke dampers, and smoke detection for automatic control
    • Acceptance testing

    NFPA 90A plays an integral role in providing adequate fire protection in today's buildings. Stay up-to-code and keep HVAC systems fire safe. (Softbound, 25 pp., 2015)

     

    Interested in other editions of NFPA 90A? Use the drop down menu above to select the edition year you need.

  • NFPA PDF Products

    Licensed PDFs can be accessed immediately. Instructions can be found in your order confirmation.

     

  • Also in NFPA 90A: Standard for the Installation of Air-Conditioning and Ventilating Systems