True or False: A fan-assisted draft furnace does NOT use dilution air.

A fan-assisted draft furnace is designed to improve the efficiency of the combustion process by more effectively drawing combustion gases out of the furnace and venting them outside. In this type of furnace, the fan creates a positive pressure that helps propel flue gases through the venting system.

Dilution air is typically used in natural venting systems to mix with flue gases, which can help to lower the temperature and ensure the gases rise up the flue. However, fan-assisted draft furnaces do not rely on dilution air because the fan provides the necessary pressure to eliminate the need for additional air mixing or cooling. Therefore, it is indeed true that a fan-assisted draft furnace does not use dilution air, as the fan itself assists in achieving proper venting and draft without the need for further air contribution.