North Carolina Home Inspector Practice Exam

How many vents are allowed in one flue pipe?

1. One

2. Two

3. Three

4. Four

The correct answer is: One

In the context of flue pipes, the code and safety standards specify that a single vent is allowed per flue to ensure proper drawing of combustion gases and to maintain safe operation of the appliance connected to it. When multiple appliances share a flue, it can create complications such as backdrafts and carbon monoxide buildup, which pose significant safety hazards. Therefore, having only one vent in a flue pipe contributes to the effective and safe venting of exhaust gases from heating appliances, leading to optimal performance and reduced risk of dangerous situations. This requirement helps maintain compliance with local building codes and safety regulations.