A chimney system is a structure designed to safely vent smoke and gases from a fireplace, stove, or furnace to the outside of a building. It typically consists of a flue, which is the passage for the exhaust, and a chimney stack, which extends above the roofline to ensure proper airflow. Proper installation and maintenance are essential to prevent issues like chimney fires or carbon monoxide buildup. Chimney systems can be made from various materials, including brick, stone, or metal. They may also include components like a chimney cap, which prevents rain and debris from entering, and a liner, which protects the chimney walls and improves efficiency. Regular inspections are recommended to ensure safety and functionality.