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


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SSPC34 Agenda June 18th 2020 v3

SSPC34 DN DRAFT Agenda (June2020) v1

Flammability Subcommittee VIRTUAL (11JUN2020) DRAFT Agenda V1

Upcoming PC Meetings

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The 2020 ASHRAE Annual Conference will no longer take place in Austin this June 27 – June 30. However, the following virtual SSPC34 meetings will take place. Please register for them via the links shown below. If there are any issues or questions about registering, please contact:

Ryan Shanley

Manager of Standards - International

1791 Tullie Circle NE
Atlanta, GA 30329  

Tel: 678‑539‑2114




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


1.1 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


2.1 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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Sean Cunningham


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Marc Scancarello


Upcoming Society Conferences

ASHRAE Virtual Conference
June 29 - July 2

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