What is the consequence of excessive condensation in the flue passage?

Excessive condensation in the flue passage can lead to potential water damage and corrosion. When there is condensation in the flue, it means that the gases produced by combustion are cooling down too much before they exit the system. This results in the formation of water, which can accumulate within the flue and interact with other combustion byproducts.

The presence of moisture can create an environment conducive to corrosion, particularly in metal components of the flue system. Over time, this degradation can compromise the integrity of the flue and connected appliances, potentially leading to leaks, reduced efficiency, and even safety hazards such as carbon monoxide buildup.

Mitigating condensation is crucial for maintaining the reliability and longevity of the heating system, as well as ensuring safe operation. It's important to monitor the system's operation and insulation to reduce the likelihood of condensation, maintaining the effectiveness and safety of the appliance.