The method comprises the step of adjusting a size of an exhaust area of an air outlet of the forced air furnace in order to produce a desired exhaust airflow through the exhaust area when the forced air furnace is connected to a ductwork....
The ductwork system consists of metal channels that carry the heated or cooled air from the furnace plenum outward through the house. There are two types of ducts: the air-delivery ducts that carry air outward to registers in the room and the air-return ducts that recirculate room air...