Does A Direct Vent Fireplace Increase Moisture In The Attic. So they equalize pretty quickly. Air infiltration is also a common cause for heat loss and can significantly increase heating cost. A sealed unused fireplace creates an opportunity for moisture problems.
However the chimney was a different story. Even if the supposed gas fireplace is a sealed one direct vent the pictured is not a listed vent for even combustion air.
If you raise the attic temperature the rh in both places would be the same.
One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home. The inner chamber of this pipe exhausts fumes. 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. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.