Why is it important to test for proper draft in venting systems?

Testing for proper draft in venting systems is crucial because it ensures the effective movement of combustion gases from the appliance to the outside atmosphere. When combustion gases, including carbon monoxide, are not properly vented, they can accumulate in living spaces, posing serious health hazards. A good draft indicates that the venting system is functioning correctly, facilitating the removal of these harmful gases and allowing the appliance to operate efficiently.

Ensuring that combustion gases are effectively expelled not only helps maintain safety but also contributes to the overall efficiency of the heating system. A strong draft can improve combustion efficiency by ensuring that the appliance runs optimally and reduces the chances of backdrafts that might allow gases to enter living spaces. Thus, maintaining proper draft is a key factor in both the safety and efficiency of residential heating systems.