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


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SSPC34 DN DRAFT Agenda (Jan2022) v1

Flammability Subcommittee HYBRID Las Vegas (29JAN2022) DRAFT Agenda V2

Upcoming PC Meetings

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The 2022 ASHRAE Winter Conference for Las Vegas will take place both in-person and virtually...Please see below for the schedule of meetings for SSPC34 including the virtual links and physical meeting rooms. 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



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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Steve Kujak


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Marc Scancarello


Upcoming Society Conferences

ASHRAE Winter Conference
January 29–February 2, 2022
Las Vegas, NV

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