GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter X Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Bathroom exhaust venting considerations

dfvellone | Posted in General Questions on

I’m installing wall mounted bath exhausts for two bathrooms and am wondering if the orientation of the fan’s exhaust – upward or downward – prior to the 90 and wall exit is at all critical. The damper on the unit is not functional unless it faces upwards (remains open in the downward facing position, but I’m installing a spring loaded damper anyways. My concern is regarding condensation prior to the 90 and whether it drips back towards the unit or downwards towards the 90. 

Thanks, Daniel

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Related Questions

Replies

  1. user-2310254 | | #1

    Daniel,

    Are you running the duct up the wall and through the roof, or are you running it directly outside?

    1. dfvellone | | #2

      I'm running it directly out the wall.

      1. Expert Member
        MALCOLM TAYLOR | | #3

        Daniel,

        With such a short run I don't think condensation will be an issue no matter how you orient it.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |

  • |

  • |

  • |
View More Ask a Question

Featured Blogs

Musings of an Energy Nerd View More

Contemplating residential energy use

Product Guide View More

Double Check

Do you really want to delete the list, ?

Note

This won't delete the articles you've saved, just the list.

This feature has been temporarily disabled during the beta site preview.

You must be a magazine subscriber to access this feature.

Subscribe today and save up to 44%

Subscribe

Or learn more

Already a subscriber?