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

Upcoming PC Meetings

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Location: Houston, TX  
Saturday June 23, 2018 Room (Floor)
7:00AM- 10:00AM Designation and Nomenclature
Grand B (4)
10:00AM - 3:00PM  Flammability Grand B (4)
Sunday June 24, 2018  
6:30PM - 10:00PM Toxicity Grand A (4)
Monday June 25, 2018  
6:30PM-10:00PM  SSPC34 Main Committee Grand E (4)




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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Steve Kujak


Upcoming Society Conferences

2019 Annual Conference
June 22-26, 2019
Kansas City, MO

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