A radiator is a device used to heat a room by transferring warmth from hot water or steam. It works by circulating this heated liquid through metal fins, which then release heat into the air. Radiators are commonly found in homes and buildings, providing a cozy environment during cold weather. They can be powered by various systems, including boilers or furnaces. Radiators come in different shapes and sizes, allowing them to fit into various spaces. Some people even choose decorative radiators to enhance their room's appearance. Regular maintenance, like bleeding air from the system, helps ensure that radiators operate efficiently and effectively.