High Efficiency Gas Furnace Exhaust Pipe

A high efficiency furnace uses a different type of venting system because it extracts the heat that remains in those combustion gases before venting the resultant mixture of water and carbon dioxide.

High efficiency gas furnace exhaust pipe. The pvc pipes are used for air intake exhaust gas and to remove the corrosive condensation resulting from the combustion process. High efficiency gas furnaces have plastic vent pipes that extend to the outdoors to get rid of exhaust gases and bring in fresh air for combustion. Well the flue which is a term referring to the vent pipe is basically the important component from the furnace that will transport the emission from the combustion heating process to. A conventional furnace vents these combustion gases through a vertical exhaust system that is attached to the furnace.

These pvc or cpvc pipes can be inviting to rodents and birds especially in the winter as well as insects mostly in summer looking for a home. Other aspects of high efficiency furnace venting. Vent pipe blocking the exhaust flow. Due to the condensing nature of a high efficiency furnace its venting must be made of a material that is resistant to corrosion.

In a great majority of cases plastic piping is used to vent high efficiency equipment. This condensing process along with the one that occurs within the high efficiency furnace itself creates moisture that can collect and freeze around and inside exhaust pipes. High efficiency gas furnaces take advantage of the fact that combustion gases contain. When exhaust gases discharged from a high efficiency furnace exhaust vent meets the cold air the air condenses faster than conventional furnaces because it is cooler.

High efficiency furnaces produce different combustion gases than standard efficiency furnaces. With standard efficiency furnaces the byproducts of the combustion process contain a certain amount of heat and are released from the furnace in a gaseous form. This high efficiency venting system must be installed when you install the new furnace. There are several other important aspects of high efficiency furnace venting.

High efficiency or condensing furnaces exhaust the combustion gases and bring in fresh. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. And why would you have to care about gas furnace vent pipe code. It is classified as type bh venting.

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. Venting for high efficiency gas furnaces materials.