Designation and Safety Classification of Refrigerants
ASHRAE Standing Standard Project Committee 34

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    SSPC34 DN DRAFT Agenda (Jan2021) v1

    SSPC34 Agenda January 22nd 2021 v1

    Flammability Subcommittee VIRTUAL (12JAN2021) DRAFT Agenda V1

    Upcoming PC Meetings

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    The 2021 ASHRAE Winter Conference for Chicago will take place virtually...Please see below for the schedule of meetings for SSPC34. For any other information regarding ASHRAE Standards, contact Ryan Shanley.

    Ryan Shanley

    Manager of Standards - International

    180 Technology Parkway
    Peachtree Corners, GA 30092  

    Tel: 678‑539‑2114


    • --Joint SSPC 34/ISO 817 MA Toxicity – Tuesday, January 12th, 9 AM to 12 PM
    • --SSPC 34 Flammability – Monday, January 18th, 8 AM to 11 AM
    • --SSPC 34 Designation and Nomenclature – Tuesday, January 19th, 8 AM to 11 AM
    • --SSPC 34 Full Committee – Friday, January 22nd, 8 AM to 11 AM


    Project Committee meeting minutes are available to interested parties upon written request of the Manager of Standards. Attachments to minutes may or may not be included due to file size and/or because copyrighted intellectual property is included. Decisions to distribute attachments to the minutes will be made on a case by case basis and due to the size of the request may take longer to process.

    Title, Purpose, and Scope

    SSPC 34 to maintain and revise Standard 34 on continuous maintenance.
    Designation and Safety Classification of Refrigerants

    ANSI/ASHRAE Standard 34-2016 - Published standard. (Supersedes ANSI/ASHRAE Standard 34-2013)
    Designation and Safety Classification of Refrigerants

    1. PURPOSE

    1.1 This standard is intended to establish a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It establishes a uniform system for assigning reference numbers, safety classifications, and refrigerant concentration limits to refrigerants. The standard also identifies requirements to apply for designations and safety classifications for refrigerants and to determine refrigerant concentration limits

    2. SCOPE

    2.1 This standard provides an unambiguous system for numbering refrigerants and assigning composition-designating prefixes for refrigerants. Safety classifications based on toxicity and flammability data are included along with refrigerant concentration limits for the refrigerants.

    This standard does not imply endorsement or concurrence that individual refrigerant blends are suitable for any particular application



    Committee Chair

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    Steve Kujak


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    Marc Scancarello

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