Article: Refrigerant numbering system explained.(REFRIGERATION ZONE: ice breaker)

There are many different types of refrigerant used in our industry today. They are produced by several different manufacturers and have numerous ways of identification. One proper method of identification is referring to a refrigerant by its ANSI/ ASHRAE designation.

This standardized numbering system was first developed by E.I. DuPont and released for general use in 1956. Since then it has been adopted by ANSI/ASHRAE as part of Standard 34 (Number Designation and Safety Classification of Refrigerants).

This numbering system allows a technician or engineer to easily identify the chemical composition of a refrigerant. Each digit of the numbering system ...

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