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Opinions on bathroom vent over shower vs middle of bathroom?
Posted on 6/25/25 at 4:55 pm
Posted on 6/25/25 at 4:55 pm
Needing to improve ventilation in bathrooms and we’re getting different opinions on what’s necessary.
Multiple contractors have suggested moving our bathroom fans to above our showers. They want to install a light-fan combo with a timer.
Others have said that’s not only unnecessary but will build condensation in the fans, which will drip back into the bathroom. They say to just install higher powered fans.
Either way, the fans are currently not connected to vents that go outside, so that needs to get fixed. We’ve had mold issues.
Multiple contractors have suggested moving our bathroom fans to above our showers. They want to install a light-fan combo with a timer.
Others have said that’s not only unnecessary but will build condensation in the fans, which will drip back into the bathroom. They say to just install higher powered fans.
Either way, the fans are currently not connected to vents that go outside, so that needs to get fixed. We’ve had mold issues.
7
Posted on 6/25/25 at 5:06 pm to StringedInstruments
I have seen it done a number of different ways. I would mount them directly outside of the shower door. I don’t want any airflow in the shower, so I don’t get cold. And I typically buy heater combo units and that works best when near the shower. I also don’t want to fill the whole room with moisture.
This post was edited on 6/25/25 at 8:14 pm
Posted on 6/25/25 at 5:41 pm to StringedInstruments
I can't imagine directly over the shower is a good idea, middle of the room and get one that has multiple speeds. Last one I put in was a two-speed Panasonic that was practically inaudible on its low-speed setting and still moved enough air volume for a mid-size bathroom. I have a large Broan sitting in a box, I think it's almost 200 CFM and way overkill for my bathrooms now. I might just put it into the downstairs half-bath anyway... 
Posted on 6/25/25 at 5:52 pm to Spankum
I would mound them directly outside of the shower door.
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That's what I typically see.
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That's what I typically see.
Posted on 6/25/25 at 6:31 pm to ItzMe1972
We have a 250 or 280 CFM ( I think)in the shower enclosure (5'x7'). It's vented vertically to a roof vent
Posted on 6/25/25 at 8:04 pm to StringedInstruments
quote:
Either way, the fans are currently not connected to vents that go outside, so that needs to get fixed
This is the main issue. It doesn't matter where the vent is located.
Posted on 6/25/25 at 8:19 pm to StringedInstruments
quote:
Multiple contractors have suggested moving our bathroom fans to above our showers. They want to install a light-fan combo with a timer.
Others have said that’s not only unnecessary but will build condensation in the fans, which will drip back into the bathroom. They say to just install higher powered fans.
Either way, the fans are currently not connected to vents that go outside, so that needs to get fixed. We’ve had mold issues.
If the problem with fans over the shower is condensation that drips into the shower, where else do you want that moisture to go? Airborne moisture will still exist, and if your problem is mold, then allowing airborne moisture to collect somewhere other than in the fan that drips back into shower will not solve your mold problem.
Note: I had a mold/mildew problem in our bathroom. We bought a new vent fan appropriate for room size (Bathroom Size x 0.13 = Minimum CFM Rating), and it solved our problem.
Posted on 6/26/25 at 7:16 am to StringedInstruments
I have a 4x8 walk in shower. No doors just wide open. I put a vent/ light 1/4 of the way into it. When I turn light on to shower the vent comes on as well. No issues
Posted on 6/26/25 at 8:22 am to StringedInstruments
Whatever you do, I recommend a timer on all bath fans.
I've installed in most of our bathrooms and it allows me to run the fan after each shower. Keeps the bathrooms much dryer if you can get everyone in the fam to use it.
I've installed in most of our bathrooms and it allows me to run the fan after each shower. Keeps the bathrooms much dryer if you can get everyone in the fam to use it.
Posted on 6/26/25 at 9:39 am to slacker130
The only reason to do that is because it's the only place it will fit above the ceiling. It will mildew sooner in that location.
Good idea on the timer controlled fart fans.
Good idea on the timer controlled fart fans.
Posted on 6/26/25 at 8:42 pm to StringedInstruments
Who handles replacing fans already there and connecting them to the roof vents? HVAC or Plumber or ?
Posted on 6/28/25 at 12:54 am to zippyputt
quote:
HVAC or Plumber or ?
Electrician.
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