High Efficiency Gas Furnace Exhaust Temperature

This high efficiency venting system must be installed when you install the new furnace.

High efficiency gas furnace exhaust temperature.

In high efficiency models the lower temperature of the exhaust can allow moisture a by product of combustion to condense in the flue especially when outdoor temperatures drop into the 20 s or below. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. The pvc pipes are used for air intake exhaust gas and to remove the corrosive condensation resulting from the combustion process. There are several other important aspects of high efficiency furnace venting.

High efficiency or condensing furnaces exhaust the combustion gases and bring in fresh. Mid efficiency furnaces have an afue annual fuel utilization efficiency of 80 and high efficiency furnaces have an afue of 90 98. In contrast modern high efficiency condensing furnaces exhaust much cooler gasses and need only plastic pipe materials such as pvc cpvc or abs for their exhaust vents some high efficiency furnaces also include a plastic pipe for intake area and all types.