Gas Furnace Vent Pipe Temperature

Traditional gas fired forced air furnaces produce hot combustion exhaust gasses and therefore need metal vent pipes or chimneys.

Gas furnace vent pipe temperature.

These vent pipe kits include storm collar kits vent adapters connectors and elbows. The vent temperature of these furnaces is much lower than natural draft. When your new high efficiency condensing furnace is installed your contractor should take extra precautions to make sure all ventilation systems are properly placed and working correctly. Whether the furnace is a standard a conventional furnace 50 70 mid efficiency 70 80 or a high efficiency furnace the provision for combustion air and flue gas vent systems is very important.

The design btuh british thermal units per hour capacity of the vent plus the furnace input and efficiency are factors affecting the temperature of the flue gases. When applied to a cooled down pipe. Higher btuh furnaces produce higher flue gas temperatures. Mid efficiency furnaces have an afue annual fuel utilization efficiency of 80 and high efficiency furnaces have an afue of 90 98.

When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm. Well making sure that you choose the right venting style will protect them. This temperature should be taken inside the vent pipe approximately 8 to 12 inches outside the furnace cabinet. Flue gas temperature flue gas temperature affects vent operation because the hotter the gases are the lighter they are.

Heat will seal the tape to the metal pipe as the temperature climbs. The low temperature residual flue gases vent outside through special plastic pipes. 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. Gas vent pipe from grainger manufactured by reliable companies like ameri vent and bosch comes in lengths of up to 4 l.

That meant the vent temperature sometimes was low enough to condense water from the gasses. In the middle 1980s a few gas furnaces started using inducers to exhaust the vent gasses. These furnaces were higher efficiency than the older natural draft furnaces. The different types of venting.

Good up to 600 degrees f.