"Ian_m" wrote in message
...
My mate installed a dehunifier in his airing cupboard, vented to landing,
as he suffered horrendous condensation upstairs due to having stairs enter
directly into the lounge.

He initially thought I will empty as necessary, but it soon filled so set
about piping it. In the end he managed to get a 19mm overflow sized pipe
through rear of airing cuboard through narrow roof space and empties out
into a gutter. Worked well.

However the biggest problem was the noise keeping everyone awake. Put it
on a time clock and condensation returned.

However he replaced it with an Amber Dry Absorption dehumidifier (about
£200) and it is silent as well as using considerably less electricity I
think is available with a pump so you can feed the waste water through a
trap made out of 19mm pipe thus preventing cold outside are entering via
the waste pipe.

Anyway doesn't need it now, as he had all the house windows replaced, all
now with trickle vents and now doesn't suffer any condensation at all.

He should have had sealed windows with no trickle venst and fit a heat
recovery and vent unit in the loft. Fresh air coming in pre-heated from
outgoing air, with no cross contamination, using a 40w fan motor.