Which of the following best describes the purpose of a draft diverter?

The purpose of a draft diverter is to prevent backdraft, which is the reverse movement of flue gases back into a combustion appliance, such as a furnace or water heater. When the system is functioning properly, the draft diverter directs flue gases upward and out of the structure while allowing fresh air to enter as needed for combustion. This is essential for maintaining safe operation and preventing hazardous gases from entering living spaces.

By ensuring that the flow of combustion gases is directed correctly, a draft diverter helps to maintain proper ventilation and air quality in the home. These mechanisms are crucial in avoiding potentially dangerous situations where carbon monoxide or other harmful gases could accumulate indoors. While adjustments in air intake, energy efficiency improvements, and burner performance enhancements are important aspects of overall heating system design, they do not accurately capture the primary function of a draft diverter.