Bathroom extraction help needed

bainbridge · 15 Nov 2022 at 12:43

Hi

We have a small bathroom with a bathtub and an electric shower above that, and I want to fit some effective extraction to eliminate the damp. With me it's fine, I'm in there for 10-15 mins and shower with the window open for about 5 mins. What little condensation is on the walls and mirror is gone in 5-10 mins. Other family members, however, can be in there for literally hours and water has run down the walls

I paved the way for some ceiling extraction in the summer by fitting a vent tile into the roof when we had scaffolding around the house, so the next step is to cut a hole in the bathroom ceiling and fix an extraction system.

Please can I have some suggestions for a good system? I've looked online but would appreciate some views from this forum.

Also, what about one that triggers based in humidity rather than just off the bathroom light? We're all electric and I don't really want a 50w motor running for 10mins when someone turns on 4.5w worth of lights for 3 mins to have a quick pee!

Thanks

Steeps · 15 Nov 2022 at 13:07

Our new build was fitted with these: https://www.internet-electrical.co....nning-mev-fan-with-humdistat-adjustable-timer

Very easy to set up and you can adjust the trickle/boost speeds. It will boost with the lights but it's then off back to trickle as soon as the lights are off again, unless you adjust the timer to stay on for longer. Has humidity sensor too so it stays on for longer after a shower. I've just set up some humidity sensors in the kitchen and bathroom to see how effective they are (have one in each room), they usually get the room back down to ambient within a couple of hours after a long shower. My bathroom is next to the bedroom and with it on trickle it also helps keep the air in the bedroom fresher too. For the cost, quietness and low running cost I think they do a great job.

bimbleuk · 15 Nov 2022 at 13:44

Xpelair or Vent-Axia are the two brands that spring to mind whenI think of extractors.

I'm almost certain it was the Xpelair C4HTS 100mm that I fitted in my bathroom with no window access. Just vents straight up to a ridge tile. I've set it to use humidity to trigger and it will run for maybe 10 - 20 mins. Comes with round or square cover and two fan settings. Slow setting is more than adequate for my small bathroom.

R.O.S.S.I · 15 Nov 2022 at 14:15

Apt thread for me as our new house doesnt appear to have any kind of extraction in the bathroom so I will be fitting something once we move in.

Are you better off fitting these in the ceiling and ducting out through a roof vent OR would it better to straight through a wall outside?

I'm siding more with the roof as I should be able to tap into the lighting circuit for power which will be more difficult in the wall.

R.O.S.S.I · 15 Nov 2022 at 14:26

Steeps said:
Our new build was fitted with these: https://www.internet-electrical.co....nning-mev-fan-with-humdistat-adjustable-timer

Very easy to set up and you can adjust the trickle/boost speeds. It will boost with the lights but it's then off back to trickle as soon as the lights are off again, unless you adjust the timer to stay on for longer. Has humidity sensor too so it stays on for longer after a shower. I've just set up some humidity sensors in the kitchen and bathroom to see how effective they are (have one in each room), they usually get the room back down to ambient within a couple of hours after a long shower. My bathroom is next to the bedroom and with it on trickle it also helps keep the air in the bedroom fresher too. For the cost, quietness and low running cost I think they do a great job.

Forgot to quote this.

This fan looks quite good actually. Something which is humidity control would be my ideal so we don't have something that just comes on with the light.
I really want something that makes light work of clearing our steam and vapour from the air though during and after a shower. Would this fit the bill? I'm not too fussed about noise by and large as where we shower isn't too close to a bedroom.

R.O.S.S.I · 15 Nov 2022 at 14:48

This was what I had looked at previously which seems to pull a hell of a lot more through than the rest

https://www.amazon.co.uk/gp/product/B01LX3OPQP

thezappa · 15 Nov 2022 at 18:51

When I eventually get round to replacing our fan the two stipulations I will use for the new kit are: rigid ducting and an in-line extractor. You’ll get greater airflow and less turbulence.

happy_2008 · 16 Nov 2022 at 08:37

bainbridge said:
Hi

We have a small bathroom with a bathtub and an electric shower above that, and I want to fit some effective extraction to eliminate the damp. With me it's fine, I'm in there for 10-15 mins and shower with the window open for about 5 mins. What little condensation is on the walls and mirror is gone in 5-10 mins. Other family members, however, can be in there for literally hours and water has run down the walls

I paved the way for some ceiling extraction in the summer by fitting a vent tile into the roof when we had scaffolding around the house, so the next step is to cut a hole in the bathroom ceiling and fix an extraction system.

Please can I have some suggestions for a good system? I've looked online but would appreciate some views from this forum.

Also, what about one that triggers based in humidity rather than just off the bathroom light? We're all electric and I don't really want a 50w motor running for 10mins when someone turns on 4.5w worth of lights for 3 mins to have a quick pee!

Thanks

I had the exact problem! The wife likes to shower for ages at hell temperature so by the time she would finish you literally could not see anything. We refurbished the bathroom last year and i put a Manrose extractor fan to fix the issue as they have a large extraction rate compared to the other extractors.