Refrigerant labeling requirements can vary across different regions and countries, depending on local regulations, standards, and environmental policies. While ASHRAE’s color coding standards are widely adopted, regional and national authorities may impose additional or modified requirements. For example, the European Union’s F-Gas Regulation has specific labeling requirements for refrigerants with high global warming potential. HVAC professionals and enthusiasts should familiarize themselves with local regulations and standards to ensure compliance and responsible refrigerant handling.