Carbon dioxide (CO2) has gained significant attention as a potential refrigerant of the future, particularly in the context of reducing environmental impact and addressing concerns about climate change. As global regulations tighten to phase out high-GWP refrigerants due to their contribution to climate change, there is increasing pressure on industries to adopt more environmentally friendly alternatives. CO2 aligns with these regulatory trends and offers a sustainable solution for refrigeration and HVAC systems. Dale Sizemore and Ignacio Varela Chaparro from Kysor-Warren discuss the evolution of refrigeration equipment and the popularity of CO2.