Extractor fan that does not let in smells or cold

Extractor fan that does not let in smells or cold

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Stevemr

Original Poster:

634 posts

163 months

Thursday 7th November
quotequote all
Our en suite bathroom, does not currently have an extractor fan.
So we open a window, when showering.
There is a large cupboard which houses the combi boiler.
My initial plan was to mount an humidistat activated extractor fan on the wall of the cupboard and put duct through the outside wall.
This would look neat, there is plenty of room.
But I have two issues, we live near a main road. The house is fairly quiet as it’s thick stone walls. I don’t want an increase in noise in the bathroom, cos you will hear it in the bedroom. The second is I don’t want any smell coming in either.
Is there any way of using an extractor fan which can overcome these two issues?
One idea I had was to put a dehumidifier on a shelf, high in the cupboard, with a large vent in the cupboard wall, and the dehumidifier plumbed into a pipe going through the wall, but I am not sure if that is practicable?
Anyone got any thoughts?
Venting into loft is not an option, as there is a bedroom up there.

Countdown

41,971 posts

203 months

Thursday 7th November
quotequote all
I'm not sure why your extractor fan would let in smells/the cold.

Mine have a louvred flap thingy which only opens when the inside is blowing out.

One of these

DonkeyApple

58,887 posts

176 months

Thursday 7th November
quotequote all
There are various types of external louvres to choose.

GasEngineer

1,164 posts

69 months

Thursday 7th November
quotequote all
Not sure if it would apply in your setup - but bear in mind that the vent would need to be a minimum of 300mm from the boiler flue.

Stevemr

Original Poster:

634 posts

163 months

Thursday 7th November
quotequote all
Hi
Thanks for replies.
I’m ok with the gas flue, vent will be about a metre above, I checked with engineer when he serviced it last week.
With regards to the smell, and draught, that can possibly be taken care of with fan with iris closer on front.
I’ve not seen a cover for outside that would help at all, nearest is probably one of those with the three flaps on, but that won’t keep smell or noise out, and because of the way the wind blows, it would blow open.
Any other ideas?

OutInTheShed

9,297 posts

33 months

Thursday 7th November
quotequote all
If you use an inline fan, it can have spring loaded anti-backdraught flaps which are quite effective and don't rattle like the louvre things.

xx99xx

2,245 posts

80 months

Thursday 7th November
quotequote all
What are the smells that could come in? Road odours?!

loughran

2,895 posts

143 months

Thursday 7th November
quotequote all
I've got a couple of Airflow iCON fans that work well. They have an iris that opens whilst the fan is running and then closes again when turned off.

The fans come in different sizes, different voltages and a selection of timer/humidity/PIR modules as plug in options.

Along with a louvred flap they work well on a west facing wall to stop the wind blowing in.

https://www.airflow.com/products/icon-range

pacenotes

323 posts

151 months

Thursday 7th November
quotequote all
You're looking for a heat exchanger fan.

It removes the hot, humid air from the room and warms up the outside air when it comes in.

https://www.screwfix.com/p/vent-axia-496036-220mm-...

It's on my list of things to change in my bathroom.

smack

9,746 posts

198 months

Thursday 7th November
quotequote all
loughran said:
I've got a couple of Airflow iCON fans that work well. They have an iris that opens whilst the fan is running and then closes again when turned off.
+1, have one in an en suite, and stops drafts and noise when not in use.

PH5121

1,990 posts

220 months

Friday 8th November
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Look for a fan with a back draft shutter, so it only opens when the fan is operational.

CambsBill

2,076 posts

185 months

Friday 8th November
quotequote all
smack said:
loughran said:
I've got a couple of Airflow iCON fans that work well. They have an iris that opens whilst the fan is running and then closes again when turned off.
+1, have one in an en suite, and stops drafts and noise when not in use.
+2. They look a lot neater as well imo.