4inch Air Vents

metricspaces

Does anyone know of any 4 inch air vents on the market that are specifically designed for reducing draught and noise? (i.e. they are more than just a straight through pipe)

Black hole air vents are designed to reduce draught, but I only see them in 5 inch e.g.
https://www.amazon.co.uk/127mm-BLACK-VENTILATOR-ANTI-DRAUGHT-BAFFLES/dp/B00CSAHUUI

Rytons make a vent that is designed to reduce draught and noise, but once again only comes in 5 inch http://rts.vents.co.uk/blog/product-details/aac125lpcw-rytons-cowled-super-acoustic-lookryt-aircore/

gutteruu

Stuff some extractor fan mesh in the vent.

t8010789

metricspaces wrote: »

Does anyone know of any 4 inch air vents on the market that are specifically designed for reducing draught and noise? (i.e. they are more than just a straight through pipe)

Black hole air vents are designed to reduce draught, but I only see them in 5 inch e.g.
https://www.amazon.co.uk/127mm-BLACK-VENTILATOR-ANTI-DRAUGHT-BAFFLES/dp/B00CSAHUUI

Rytons make a vent that is designed to reduce draught and noise, but once again only comes in 5 inch http://rts.vents.co.uk/blog/product-details/aac125lpcw-rytons-cowled-super-acoustic-lookryt-aircore/

I have a four inch extractor fan that has a built in motor that opens and closes a vent when turned on/off, stops the blow through drafts, it’s called an x-mart vectaire. You can also buy pipe that has an “s” bend built into it to reduce draft.

metricspaces

Should have mentioned but this is for a room with a wood burning stove, so needs to be permanently open. The vents with the S bend are the Black Hole vents I mentioned above.

lgk

metricspaces wrote: »

Should have mentioned but this is for a room with a wood burning stove, so needs to be permanently open. The vents with the S bend are the Black Hole vents I mentioned above.

The s-bends in the likes of the Black Hole vents significantly reduce the effective free area of the vent, so you may need to install more of them to get sufficient air flow.

heffo500

I got anti draught vents from the below. I found them very reasonable and easy to install.


https://www.iconbp.ie/grilles-and-outlets/

lgk

heffo500 wrote: »

I got anti draught vents from the below. I found them very reasonable and easy to install.


https://www.iconbp.ie/grilles-and-outlets/

The OP may need two of these in the room to get sufficient free area.

metricspaces

heffo500 wrote: »

I got anti draught vents from the below. I found them very reasonable and easy to install.


https://www.iconbp.ie/grilles-and-outlets/

Thanks. These look to be 5 inch? I am looking for ones with 4 inch pipe.

metricspaces

lgk wrote: »

The OP may need two of these in the room to get sufficient free area.

I would only need one of these as stove is only 5kw.

A 4inch pipe provides more airflow than is actually needed for a 5kw stove, so no reason for me to go to a 5inch unless I can't find a 4inch.

heffo500

metricspaces wrote: »

Thanks. These look to be 5 inch? I am looking for ones with 4 inch pipe.

I bought the Fresh TL98P Wall Vent from them, the four inch version. And I do find it dampens the acoustics,.

Might be worth calling them as most vents with the anti acoustics seem to be 4 inch. Could you drill a 5 inch hole?

lgk

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metricspaces wrote: »

I would only need one of these as stove is only 5kw.

A 4inch pipe provides more airflow than is actually needed for a 5kw stove, so no reason for me to go to a 5inch unless I can't find a 4inch.

But some of the options with a 4" pipe and anti-draught baffles only have the effective free area of around 2" pipe. The 5" black hole vents only have an effective free area of 30cm2, so effectively a 2.4" pipe.

metricspaces

heffo500 wrote: »

I bought the Fresh TL98P Wall Vent from them, the four inch version. And I do find it dampens the acoustics,.

Might be worth calling them as most vents with the anti acoustics seem to be 4 inch. Could you drill a 5 inch hole?

I see the TL98P here https://vents.ie/wall-vents/ for £100 ! That's some price for what is just a pipe, filter and grill.

heffo500

metricspaces wrote: »

I see the TL98P here https://vents.ie/wall-vents/ for £100 ! That's some price for what is just a pipe, filter and grill.

That website is day light robbery, I bought them from Icon BP for about 28 euro Inc vat. The deal with the public and were very helpful

metricspaces

lgk wrote: »

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But some of the options with a 4" pipe and anti-draught baffles only have the effective free area of around 2" pipe. The 5" black hole vents only have an effective free area of 30cm2, so effectively a 2.4" pipe.

Definitely I will check the spec before buying. Once it's at least 6500mm2 I'm good.

metricspaces

heffo500 wrote: »

I bought the Fresh TL98P Wall Vent from them, the four inch version. And I do find it dampens the acoustics,.

It looks like it is the TL98P-dB you need if you want to reduce noise?

It's not obvious what exactly their product has that reduces noise, do you know?

The Ryton vents it is clear how they reduce noise, they just put a piece of "acoustic foam" into the pipe http://rts.vents.co.uk/blog/product-details/aac125lpcw-rytons-cowled-super-acoustic-lookryt-aircore/

heffo500

metricspaces wrote: »

It looks like it is the TL98P-dB you need if you want to reduce noise?

It's not obvious what exactly their product has that reduces noise, do you know?

The Ryton vents it is clear how they reduce noise, they just put a piece of "acoustic foam" into the pipe http://rts.vents.co.uk/blog/product-details/aac125lpcw-rytons-cowled-super-acoustic-lookryt-aircore/

I didn't go for the acoustic version as I only have a 4 inch core and there's no outdoor noise where I am.

Maybe give them a call and I'm sure they can explain, if you do find out let us all know.

Dascoop

Did you get a good solution for this metricspaces? Did you go with the icon 4 inch? Or did you find something else?