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12 votes

Is it a bad idea to install a bathroom vent in a drop ceiling without external exhaust?

The point of a bathroom exhaust fan is to pull humid air out of the bathroom. That humid air must go somewhere. If that "somewhere" is another interior space, you're just moving the ...
Ilmari Karonen's user avatar
2 votes

Is it a bad idea to install a bathroom vent in a drop ceiling without external exhaust?

Others already said you shouldn't dump humid air into your ceiling space or other rooms. As for what to do if you don't have a vent that goes outside... There are duct free "exhaust fans" ...
aquaticapetheory's user avatar
29 votes

Is it a bad idea to install a bathroom vent in a drop ceiling without external exhaust?

You need to exhaust the bathroom via a duct in the ceiling void and through an outside wall. You can't just push bathroom air into the void ... it will cause mold up there and push humidity and ...
jay613's user avatar
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0 votes

Is it ok that my wall air vent does not seal to duct?

It's kind of hard to tell exactly what's going on in that picture, however it looks to me like the rigid duct was just pushed up to the vent opening as you suspect. Can you move that rigid pipe pretty ...
FreeMan's user avatar
  • 47.1k
1 vote

Is it better to have more, smaller-size soffit vents or fewer, larger-size vents?

Ideally, a continuous vent that allows air to enter each rafter bay is best. Most homes do not have this; rather individual cut vents. The importance is to have intake square footage greater than ...
Evil Elf's user avatar
  • 3,809

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