Why should old non-compliant refrigerants not be used?

Old non-compliant refrigerants should not be used primarily because they are illegal and can be harmful to the environment. Many of these refrigerants, such as certain chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), have been phased out due to their ozone-depleting properties and significant contribution to global warming. Continued use of these substances poses substantial risks to both human health and the ecosystem, making their use not only unethical but also against environmental regulations.

Using compliant refrigerants helps to reduce environmental impact while meeting legal standards, which is critical for sustainability and compliance with global agreements aimed at protecting the ozone layer and mitigating climate change.