Gas Heat ESCO Practice Exam 2026 - Free Gas Heat ESCO Practice Questions and Study Guide

The function of a draft diverter in a gas heating system is to ensure proper venting of combustion gases. It plays a crucial role in maintaining safe operation by directing the exhaust gases produced during combustion to the appropriate venting system and preventing backdrafts. This is essential for maintaining indoor air quality and minimizing the risk of dangerous gases, such as carbon monoxide, from leaking back into living spaces.

A draft diverter helps to create a slight negative pressure in the vent system, allowing it to effectively draw out combustion gases while allowing fresh air to enter for the combustion process. This function is critical for the safe and efficient operation of any gas-fired appliance, as it ensures that harmful emissions are expelled outside, away from the home.

The importance of the draft diverter is highlighted when considering the impact of inadequate venting, which could lead to excessive buildup of dangerous gases inside the living area. Proper installation and functionality of the draft diverter are essential to the overall safety and efficiency of the gas heating system.