Why do boilers require a venting system?

Boilers require a venting system primarily to safely exhaust flue gases outside the building. Combustion processes within a boiler produce flue gases that can contain harmful substances such as carbon monoxide, nitrogen oxides, and other pollutants. If these gases are not properly vented, they can accumulate within the living space, posing severe health risks to occupants and leading to unsafe conditions.

The venting system ensures that these flue gases are expelled safely to the outside environment, helping to minimize the risk of poisoning and ensuring compliance with health and safety regulations. Proper venting not only protects the health of individuals nearby but also promotes efficient combustion within the boiler, thereby enhancing its performance and longevity.