Natural refrigerants are substances that occur in nature and can be used for cooling and refrigeration without the harmful environmental effects associated with synthetic refrigerants. Common examples include ammonia, carbon dioxide, and hydrocarbons like propane. These refrigerants have low global warming potential and are often more energy-efficient. Using natural refrigerants can help reduce greenhouse gas emissions and comply with environmental regulations. They are increasingly being adopted in various applications, from commercial refrigeration to air conditioning systems. Their use supports sustainability efforts and promotes a healthier planet by minimizing the impact on the ozone layer and climate change.