The function of the inducer in a gas furnace is primarily to remove exhaust gases from the combustion chamber, ensuring proper venting and safety in the operation of the furnace. This device creates a negative pressure in the exhaust system and assists in pulling the combustion gases out of the heat exchanger and expelling them safely through the flue vent.
While the inducer may seem related to airflow, its specific role is related to the evacuation of exhaust gases rather than regulating overall airflow throughout the system. This is crucial because without effective removal of combustion by-products, there could be a risk of carbon monoxide buildup or furnace inefficiency.
The other functions presented in the options involve aspects of gas supply control, combustion air intake, and general airflow management, but they do not reflect the defined role of the inducer in exhaust gas removal.