A condenser is a device that transforms vapor into liquid by removing heat. It plays a crucial role in various systems, such as air conditioning and refrigeration. When warm vapor enters the condenser, it cools down and condenses into a liquid, allowing the system to recycle refrigerants efficiently. In many cases, condensers are made of coils or tubes filled with a cooling medium, like air or water. This process is essential for maintaining the desired temperature in spaces like homes and cars. Without condensers, systems like HVAC and refrigerators would not function effectively, leading to discomfort and food spoilage.