refrigerant

**Refrigerant**
Refrigerants are substances used in cooling systems such as air conditioners, refrigerators, and heat pumps to absorb and release heat during the refrigeration cycle. They play a crucial role in temperature control by transitioning between liquid and gas phases. Common types include hydrofluorocarbons (HFCs), chlorofluorocarbons (CFCs), and natural refrigerants like ammonia and carbon dioxide. Understanding refrigerants is essential for HVAC professionals, environmentalists, and anyone interested in energy-efficient and eco-friendly cooling technologies.