Shaping Tomorrow's Built Environment Today

New ASHRAE-Classified Refrigerants to Meet Society's Changing Needs

Share This

Course Length: 3 hours

ASHRAE Standard 34 maintains a list of refrigerants with a standardized system of assigned refrigerant numbers and well defined safety classifications, including toxicity and flammability ratings.  This ever growing list of refrigerants currently includes 161 chemicals and chemical blends that have been proposed for use as refrigerants.

There has long been use of flammable and toxic materials as refrigerants, such as propane and ammonia, but their use has been restricted to appropriately design industrial systems, as proscribed in ASHRAE Standard 15 and other safe use guidelines.  Presently, concern about global climate change is driving the cooling industry to consider new classes of chemicals to be used as refrigerants.  With the new chemicals are new safety classifications for flammability, including “Class 2L”. 

This short course explains how the changing needs of society are creating requirements for new refrigerants to be developed and used.  The course also explains the new safety classifications that are being proposed and some of the ramifications of these new classifications.


Course Instructor

Thomas Leck, Ph.D., Member ASHRAE


Additional Information

All courses are available for Chapter and In-Company Programs. Courses may be periodically scheduled for the Winter and/or Annual Conference Education Programs, as well as the Online Courses Series.

Chapters or Companies: Contact Karen Murray, Manager of Professional Development (kmurray@ashrae.org or 678-539-1146), to schedule an ALI seminar or course at your organization or event.

Availability: Check the various offerings listed under Professional Development > Learning Portal to see if this course is being offered at an upcoming event.

Close