Why is it prohibited to use "unapproved" refrigerants in certified appliances?

Using "unapproved" refrigerants in certified appliances is prohibited primarily because they can harm the system and violate regulations. Refrigerants that have not been approved undergo rigorous testing and regulation to ensure they do not pose risks to both human health and the environment.

Unapproved refrigerants may have properties that can lead to system inefficiencies, increased wear and tear on components, and potential leaks that might contribute to environmental damage. Additionally, using unapproved substances can result in legal repercussions due to violations of established regulations set forth by environmental and safety agencies.

Maintaining compliance with approved refrigerants helps ensure that systems operate safely, efficiently, and in an environmentally responsible manner, which is crucial for protecting both consumers and the planet.