In 2016, the Air-Conditioning, Heating, and Refrigerant Institute (AHRI) recommended major changes to the way refrigerant containers were colored. Before these recommendations, the industry followed long-established color guidelines. AHRI’s “Guideline N, Assignment of Refrigerant Container Colors” set a specific Pantone color for each type of refrigerant. This color-coding system helped handlers recognize refrigerants at a glance. However, over time, this...
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