AHRI has announced significant changes to refrigerant paint color designations in the revised version of its Guideline N, Assignment of Refrigerant Container Colors. All refrigerant containers should have one uniform paint color, a light green/gray (RAL 7044), and existing individually assigned container paint colors should be transitioned to that color by 2020. The guideline previously stipulated that specific paint colors be used for refrigerant containers as an additional means of refrigerant identification. However, with the increasing number of refrigerants approved for use, there was concern over the potential misidentification of similarly colored containers. This confusion was likely to increase as new refrigerants are added to the market. All refrigerant users should be aware that the label will now serve as the primary means of positively identifying the type of refrigerant in a cylinder or drum.
(Source: AHRI Update, June 30, 2016)