Email   Password


ASHRAE Membership

ASHRAE membership is open to any person associated with heating, ventilation, air conditioning or refrigeration. ASHRAE is unique because its membership is drawn from a wide range of disciplines relating to the HVAC&R field. Over 56,000 individuals from more than 100 nations belong to the Society.

Discounts on Publications

ASHRAE members earn 15% off publications. Hundreds of titles are available including the complete collection of ASHRAE Standards including 90.1, 62.1 and 189.1.

Develop Leadership Skills

When you join ASHRAE, you are making an investment in yourself. When you become active in the Society by giving your time and sharing your knowledge, you get even more out of that investment.

Network with Industry Professionals

Each month, all over the world, ASHRAE chapters convene for an informational program featuring a speaker or topic that is key to professionals in the industry. Meet with your peers and share ideas.
Need technical info? Search ASHRAE's Bookstore >
Education & Certification

Course Detail

New ASHRAE-Classified Refrigerants to Meet Society’s Changing Needs (code 64)

Jan 21, 2018
Sunday, 3:30 - 6:30 pm
Course will take place at McCormick Place

Instructor(s): Thomas Leck, Ph.D, P.E. , Member ASHRAE
Non-Member Price: $184, after January 2, 2018, $214
ASHRAE Member Price: $139, after January 2, 2018, $169

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.