Fireplaces especially wood burning fireplaces can consume a large amount of oxygen in a short amount of time and the normal vents traditionally installed are not always enough to supply the needed oxygen.
Fireplace intake air vent in attic.
Through roof vent through soffit vent easy install.
This is a problem.
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Do you want to lose heat.
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The pictured duct is combustible and should not be exposed let alone within 1 proximity of even a b vent and this concentric foil duct is not a listed vent.
The chimney cap buying guide and the chimney pipe buying guide will help you find out what your options are and how.
External air intakes are used to bolster a fireplace s supply of air.
Fireplace air vent installation can sometimes be difficult to figure out which air intake vent kit is right for you.
We have several resources to help.
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Why not just take the extra staep and do it right which is intake exterior air.
If two different types of exhaust vents are combined for example a ridge vent and a gable louver the primary path of air becomes the distance between the two types of exhaust vents.
Ventilaider complete air vent filter set 20 x 84 electrostatic media with 126 of installation tape 35 filters per roll for hvac ac heating intake registers grilles to reduce dust and allergy.
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When the fireplace.
Since the air consumption of a wood stove is so low the risk of reversal of a ducted combustion air supply outweighs any advantage gained by bringing air from outdoors.
That path is supposed to be from low in the attic intake vents to the highest possible exit point in the attic exhaust vents.
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Even if the supposed gas fireplace is a sealed one direct vent the pictured is not a listed vent for even combustion air.
An open fireplace in contrast can exhaust such a large volume of air that it could affect the operation of for example a conventional gas fired furnace or water heater.