Christian McArdle wrote:
would it be feasible to run it under the stairs with a closed door to
the cupboard, or would I just be storing up grief for myself with
condensation and damp building up in the middle of my house?

Yes, although my old Hoover would have been a problem. The Bosch would
handle this. However, you will need some ventilation, as it will produce
some moisture which will cause problem if there is no way at all to get rid
of it. With the adjacent shower room, it would be very easy to ventilate
through there, as shower rooms need ventilation anyway.

The problem is that it's hard to know how much humidity a machine will
produce before you buy it. I did have a look at Which but, although it
did claim to mark the machines on humidity, they all seemed to come out
on a similar level, which makes me think that either all condensing
driers are pretty good now or the Which people didn't really measure
them all that closely. Still, I guess I have a personal recommendation
for the Bosch now!

I don't know what you've got planned/already existing in there, but just a
simple grille between the rooms might work if the shower extractor is good.
Alternatively, a humidistat fan to vent from the cupboard into the shower,
or best of all, a ducted system with inline centrifugal fan that can suck
from both rooms.

The shower room isn't going to have a window in it, so I'm assuming the
venting is going to be pretty good... Actually, a problem just occurs
to me in that the vent will need to come out of the cupboard under the
stairs through the wall where the shower is actually going to be (i.e.,
the shower is going to take up the whole of one end of a narrow room,
with no wallspace on either side and this backs onto the cupboard
wall), so I guess it will either need to be up above head height, or
I'll need to forget it. Oh well, I guess I'll need to ask the builder
if he thinks it's going to be possible.

Thanks for your advice, though - it's much appreciated!

Helen