What do you call the venting structure for gases released from a combustion appliance?

The term used for the venting structure that carries away gases released from a combustion appliance is known as a flue. A flue is specifically designed to direct exhaust gases from a heating appliance, such as a furnace or a fireplace, to the outside atmosphere. It ensures that harmful combustion byproducts, including carbon monoxide and other gases, are safely expelled, preventing them from entering living spaces.

In the context of combustion appliances, the flue often connects to a chimney or an exhaust system, but its primary function is to manage the airflow and venting of gaseous emissions. This is crucial for maintaining safety and comfort in an indoor environment.

Understanding the function of a flue helps in appreciating proper installation, maintenance, and safety protocols necessary for combustion appliances, as any obstruction or failure in the flue system can lead to dangerous situations, such as the buildup of toxic gases.