High Efficiency Furnace Fresh Air Intake

These pvc pipes are connected to the furnace and expelled outside.

High efficiency furnace fresh air intake.

See reference 5 in sealed combustion units as most high efficiency furnaces are. However without a quality installation the furnace may never deliver its expected energy. Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys. Other aspects of high efficiency furnace venting.

Fresh air intake for high efficiency furnaces i am a homeowner in new jersey who recently had a carrier infinity ics modulating gas furnace model 58mvc installed. A high efficiency or condensing furnace can significantly reduce energy consumption in a typical home. A heat recovery ventilator or hrv is an optional device separate from the furnace that works as an air to air heat exchanger. 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.

The pvc pipes are used for air intake exhaust gas and to remove the corrosive condensation resulting from the combustion process. If a furnace has an afue rating of 90 percent or greater it is considered condensing. Energy star has found that new furnaces often do not perform to their rated efficiency with. Since high efficiency furnaces draw air directly from outside the furnace itself does not require a fresh air intake in order to replace inside air that otherwise would have been drawn from the room the furnace is located in.

Some high efficiency furnaces also include a plastic pipe for intake area and all types use a third plastic pipe to drain away the corrosive condensation resulting from the combustion process. This high efficiency venting system must be installed when you install the new furnace. When a home is well air sealed or tight it may warrant an optional fresh air intake that pulls air from outdoors into the furnace and prevents partial vacuum situations.