Multiple extractor fans on one outlet vent?

[King Herald]

The house we are building only has one hole in the wall, so we are wondering if we can interconnect the dryer outlet and the downstairs toilet extractor outlet and have them both going out one hole to the outside world?

Something tells me that air will back-feed down the one that is not in operation, so is there some sort of conventional type 'flapper' or similar device that will prevent back flow of air/smell/gas etc?

I'd rather do this that bang another hole in the wall. All will be hidden behind a suspended ceiling so no worries about ugliness.

[PoleDriver]

Could you put another extractor at the outlet (existing hole) which would suck air from dryer or bathroom thereby stopping any 'blowback'?

[King Herald]

I did think of that, but having it turn on and off at the right times would be the problem. The bathroom extractor will be wired to the light, so they come on together. But the dryer will run independently and in an adjacent room.

Everything must be simple and automatic. I have myself and four women in the house, so you can see where this is going...

[Mobsta]

King Herald said:

Everything must be simple and automatic. I have myself and four women in the house, so you can see where this is going...

You want it to blow-dry-evaporate your piddle splashes + put the seat down when you forget?

[jeff m2]

You either want a spring loaded back draught damper or an electric op damper.
What size is your ducting ?

Just did a search....found these, maybe these are better than the spring loaded ones
http://www.batticdoor.com/bathfandraftblocker.html

Edited by jeff m2 on Thursday 20th October 03:47

[King Herald]

Mobsta said:

King Herald said:

Everything must be simple and automatic. I have myself and four women in the house, so you can see where this is going...

You want it to blow-dry-evaporate your piddle splashes + put the seat down when you forget?

No, I leave the seat up, it is a matter of principle.

jeff m2 said:

You either want a spring loaded back draught damper or an electric op damper.
What size is your ducting ?

Just did a search....found these, maybe these are better than the spring loaded ones
http://www.batticdoor.com/bathfandraftblocker.html

A 'spring loaded back draught damper' would be ideal, but whether they have such an animal in this part of the world is a different story. I'll check out the DIY stores, now I'm armed with a name for it.

Trying to describe such a thing, with no correct name or part number, is like drawing teeth over here. It is far too easy/common for them to say "sorry sir, we no have" and hope you go away.

I spent a week trying to find 4" flexible dryer hose, with no luck, so at the moment we have 4" plastic drainpipe running from the dryer to the hole in the wall.

[Mr Pointy]

King Herald said:

A 'spring loaded back draught damper' would be ideal, but whether they have such an animal in this part of the world is a different story. I'll check out the DIY stores, now I'm armed with a name for it.

Trying to describe such a thing, with no correct name or part number, is like drawing teeth over here. It is far too easy/common for them to say "sorry sir, we no have" and hope you go away.

I spent a week trying to find 4" flexible dryer hose, with no luck, so at the moment we have 4" plastic drainpipe running from the dryer to the hole in the wall.

I'm often in that situation & find a picture often helps & is worth more than a thousand words. If you show them a picture of a flexible hose & ask if they have "something like this" often it gets through the language barrier.