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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

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  1. user-2310254 | | #1


    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


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

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