ASHRAE’s color coding standards provide a visual system for identifying refrigerants based on their chemical group and environmental impact. Each color corresponds to a specific refrigerant category, making it easier to recognize and distinguish between different refrigerants. For example, green indicates refrigerants with low or no ozone depletion potential, while red indicates refrigerants with high ozone depletion potential. This standardized system enables HVAC professionals to quickly identify refrigerants, ensuring proper handling, charging, and disposal, and reducing the risk of accidents or environmental harm.