Condensation In Bathroom With No Window - Best Extractor Solution?

[Pgeddon]

You need a vent / ventilation for the shower area as that fan isn’t doing nothing where it’s positioned

Also supply air is needed

I think it's going to be a little bit of a pain in the backside to do that now. As the ceiling joists run front to back in that room and the channel i'd run the ducting down from the shower will have a whopping soil pipe between that and the external wall... so not even sure its possible. on the attached, blue is the proposed shower vent, green is where the soil is running horizontally.




That said, most of the moisture is on the other side of the room, the far back side, furthest from the shower... so it's like the vapour is just not being sucked up by the extractor fan as it passes by.....

 

[Murdoch]

If the red x is where the fan is, it is in the wrong position imho.

it would be more effective over the shower so the air drawn under the door pulls more air through the shower area and out

aNS as the shower has its own ceiling then the air directly above it is unlikely to clear

 

[Pgeddon]

If the red x is where the fan is, it is in the wrong position imho.

it would be more effective over the shower so the air drawn under the door pulls more air through the shower area and out

aNS as the shower has its own ceiling then the air directly above it is unlikely to clear

Yes, I see what you're saying, though I replied to a separate comment about how im not sure thats even viable due to the joists and soil pipe positions... (attached below) blue is proposed fan over shower, green is soil pipe, red is where current fan is. I cant see how i could then duct it to the external wall at the back with the soil pipe in the way like that.

As its unlikely I can get it vented above the shower.... I guess.... where's the next best place for it? even further from the shower would be bad, right?

 

[ShaunCorbs]

The problem is with the room being on the larger size and not being in the correct / ideal position your going to have to up the output eg increase the dia to increase the air changes in a room

I would say a 6” would struggle 8” would be better as it would change the room air once ever 2-3 minutes

 

[Pgeddon]

The problem is with the room being on the larger size and not being in the correct / ideal position your going to have to up the output eg increase the dia to increase the air changes in a room

I would say a 6” would struggle 8” would be better as it would change the room air once ever 2-3 minutes

Interesting, I cant say i've seen any centrifugal type ones yet that have bigger ducting than 4"....

Plenty of axial types but they're generally less powerful arent they? Icon60 by Airflow was the biggest axial / hybrid type I saw and that was 6" but it got lots of awful reviews. So thought a 4" vent-axia centrifugal might be enough, based on the flow rates they advertise they look pretty powerful to be fair, over three times the extraction im getting currently. Louder ofcourse as the trade-off, but that's not an issue really.

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says it'll do 60l per second, vs my current one which does about 19.

 

[Murdoch]

You shouldn’t need an icon 60 in that room

What do the red lines on your sketch mean?

 

[Pgeddon]

You shouldn’t need an icon 60 in that room

What do the red lines on your sketch mean?

That's the current ducting, running from the extractor fan to the external wall, running parallel to the joists. Length of duct is thereabouts 2.5M

 

[Murdoch]

That's the current ducting, running from the extractor fan to the external wall, running parallel to the joists. Length of duct is thereabouts 2.5M

So why don’t you get the installer back. Cut a new hole in the ceiling and use the duct in place?

Sounds like the installer hasn’t done many bathrooms

 

[Pgeddon]

So why don’t you get the installer back. Cut a new hole in the ceiling and use the duct in place?

Sounds like the installer hasn’t done many bathrooms

I can get the installer back, but I'm not sure I follow what you mean?

Apologies if ive been unclear, red is what's already there, ducting and fan. My initial idea was to simply swap out the red x marked fan for something much stronger. Till I saw the responses on this thread about moving the position of the fan.

If you mean cut a hole somewhere else, where do you mean?

 

[ShaunCorbs]

Interesting, I cant say i've seen any centrifugal type ones yet that have bigger ducting than 4"....

Plenty of axial types but they're generally less powerful arent they? Icon60 by Airflow was the biggest axial / hybrid type I saw and that was 6" but it got lots of awful reviews. So thought a 4" vent-axia centrifugal might be enough, based on the flow rates they advertise they look pretty powerful to be fair, over three times the extraction im getting currently. Louder ofcourse as the trade-off, but that's not an issue really.

Vent-Axia Lo-Carbon Quadra TM With PIR & Timer (439253)

Vent-Axia Lo-Carbon Quadra TM With PIR & Timer (439253). Fast and Free Delivery Available. Trade Quality with Low Prices.

www.electrical2go.co.uk

says it'll do 60l per second, vs my current one which does about 19.

That would give you an air change in roughly 10-12 minutes

Inline ones are always best

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