Home & Garden

Bathroom ceiling fan

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  • Jan 18th, 2019 10:18 am
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Nov 28, 2016
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Bathroom ceiling fan

Not a ventilation fan, an actual ceiling fan. First house we have ever lived in with 9 foot ceilings. Each bathroom does have ventilation, although centralized, so all vents vent from the bathrooms and kitchen, and out the side of the house

The vents do vent fine, as they pass the toilet paper test. But have noticed that a lot of moisture is on the walls compared to our old house that each bathroom had its own dedicated exhaust fan. The mirrors do clear the normal time, but just getting those streak marks on the walls.

Had anyone ever installed a ceiling fan in a bathroom to help with air movement for this issue? We have only lived here a month, so getting used to whats what now, and dont think this is normal.

As well, the vents for the bathroom are high on the wall, not on the ceiling, if that matters for this install
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Feb 26, 2011
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If they all collect, are there flappers that prevent one bathroom backflowing into another? (i.e. you would need to run all fans at the same time to make it effective)

Also, do you make sure the heat vents are open in each bathroom
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jwslam wrote: If they all collect, are there flappers that prevent one bathroom backflowing into another? (i.e. you would need to run all fans at the same time to make it effective)

Also, do you make sure the heat vents are open in each bathroom
I assume there isnt, because if its one fan unit for all 4, how would it know which room is occupied. As there is no power baffle to turn on, etc.

If one switch is turned on, they all "suck" Each vent doesnt have its own fan, its a Fantech centralized fan in the furnace room. So its all or nothing. Ive tested that each vent is active when any of the 4 switches is turned on

What do you mean by back flowing? All heats vents are open in the bathrooms
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I assumed each bathroom had it's own fan.... so if Fan #1 was on while Fan 2,3,4 were off, it would push humidity from bathroom 1 into 2,3,4. Per above, this assumption was false, so ignore my backflow comment.
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jwslam wrote: I assumed each bathroom had it's own fan.... so if Fan #1 was on while Fan 2,3,4 were off, it would push humidity from bathroom 1 into 2,3,4. Per above, this assumption was false, so ignore my backflow comment.
I wish it was setup that way, its not. I get the concept of it, but not liking it. As it then draws air from other rooms to. Which in the winter means pulling heat out of the 4 rooms, and replacing it in the house with outside air, thats not temp or humidity controlled.

Not an efficient way on my books. Cooking in the kitchen turn that fan on, and all 3 bathrooms get exhausted as well. And then fresh air is drawn into the furnace ducts near the cold air return

What Im thinking is if a ceiling fan is in there with the higher ceilings, but the vent is on the side, that it would force air down and as well just dry off the walls faster.

Bathroom has two lights in it currently, both on seperate switches. So I can just replace the one closest to the shower/vent

Just an idea, Im all for making things more efficient if possible

Last house we were in for 11 years, so had all of this sort of thing well under control. But that was the usual one exhaust fan per room scenario as well
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Have you thought of emailing Fantech with the setup in your home, as well as the model of your unit, to ensure it is appropriate sized for your situation and operating properly? I would first rule out installer error and an improperly sized unit from the equation.
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TrevorK wrote: Have you thought of emailing Fantech with the setup in your home, as well as the model of your unit, to ensure it is appropriate sized for your situation and operating properly? I would first rule out installer error and an improperly sized unit from the equation.
I have, they are surprised its installed this way, usually they are installed one fan for two vents, not 4. So it comes down to, builder cut backs on builds, etc.

I will send them the model to confirm however, but this all or nothing setup is a terrible idea. Great as an idea, but execution of it doesnt make any sense
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Nov 17, 2012
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If you want to experiment with air movement just put a simple fan in the room. A ceiling fan in a bathroom is just bizarre.

Is there a large enough gap under the door to let air into the room? The fan can only exhaust as much air as can get into the room.

Try with the door cracked open - same result? You might just need to trim the door a bit to get more air in.
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torontotim wrote: If you want to experiment with air movement just put a simple fan in the room. A ceiling fan in a bathroom is just bizarre.

Is there a large enough gap under the door to let air into the room? The fan can only exhaust as much air as can get into the room.

Try with the door cracked open - same result? You might just need to trim the door a bit to get more air in.
Ive seen it in some homes. The bathroom is quite large, as well as the master bedroom ensuite.

COuld be just the case of moving into a new house and getting used to things. There is no mould etc. Just not used to such high ceilings in an upstairs bathroom, so thought if the air was forced down it would clear better.
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I presume you have a forced air furnace and a ducted house. Why not just run the furnace fan on continuous? That usually keeps air flowing well throughout the house. I personally dislike ceiling fans but see their value in truly vaulted ceilings - which 9' is not.
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CaptSmethwick wrote: I presume you have a forced air furnace and a ducted house. Why not just run the furnace fan on continuous? That usually keeps air flowing well throughout the house. I personally dislike ceiling fans but see their value in truly vaulted ceilings - which 9' is not.
Ive never had fans in a bathroom, but have seen them. This is just an idea, not sure if we will even do it. But weve never had a seperate roof light either in our bathrooms either, we have usualy just had the vanity lights above the sink counter.

We have used fans in all rooms, even onces with 8 foot ceilings. Guess its all personal choice, if you dont do the downrod its not much lower than a regular light, and we always find they just move air better in bedrooms, living rooms etc so the air is mixed better

But thats just me

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