What is the maximum length allowed for a horizontal chimney connector?

The maximum length allowed for a horizontal chimney connector is typically restricted to 10 feet to ensure safe and efficient venting of combustion products from heating appliances. Exceeding this length can result in several issues, including increased resistance to airflow, which can lead to improper venting and potential backdrafting. This can pose significant safety hazards due to the risk of carbon monoxide buildup or inadequate removal of exhaust gases.

Keeping the horizontal length at this limit facilitates effective draft conditions, allowing for optimal performance of the heating system while adhering to building codes and safety standards. By maintaining shorter lengths, it also minimizes the chance of condensation forming in the vent, as longer horizontal runs can cool the exhaust gases and promote condensation, which can lead to corrosion of the chimney connector and potential system failure over time.