"Peter Scott" wrote in message
...
ARWadsworth wrote:

"Peter Scott" wrote in message
...
Allan Mac wrote:
On 4 Oct, 09:32, "the_constructor"
wrote:
How do Manrose extractor fans compare with Xpelair and Ventaxia ?

Kindest regards,

Jim

cheap and cheerful, go noisey after a couple of years useually driving
customer nuts before complete failure. (depends on useage of course).
Allan

I've replaced a ceiling fan with a new one pumping 85 cubic metres per
hour. I am a bit disappointed with the performance. The calculations
suggest it should clear the whole room in six minutes. However it
doesn't keep pace with the steam during a shower. It feeds a one metre
pipe into a chimney. Am I being too optimistic? The room clears fairly
quickly after the shower goes off. But SWMBO thinks the room should stay
clear. Perhaps I need to go up to an inline one with higher throughput?
I do keep the door slightly open and I don't think the chimney is
blocked.

Peter Scott

I think that you are a little too optimistic.
I recently fitted an inline fan that extracts 220 cubic metres per hour
for a customer. I can assure you that the shower still steams up the room
when in use. I left the fan with a 10 minute timer overrun, however the
room is clear after 2 minutes.

Adam

Thanks. That's reassuring, and will get me out of trying another one. I've
got expert opinions to back me up now!

Yes, I have avoided lack of air by opening the door a small amount. The
house is well sealed but has open but unused chimneys so I think the air
flow will not be impeded.

Peter Scott


Drawing air down a chimney is not an "easy" route for the air.

Would a dedicated air vent in the bathroom be possible?