klkbloke wrote:

Hi All,
I've just moved to a house with a downstairs bathroom hence leaving a
window open after a shower is no longer an option. I thought the best
option would be to install an extractor fan while I'm putting in the
new bathroom suite. However I have two questions...

1) I've seen a fan which operates on a humidistat, not connected to the
light switch in anyway. Has anyone had experience of these? Are they
any good. I'm looking at one for ~£30 from Screwfix.

2) I have an airbrick - well it's actually cast iron. I was planning to
knock that through and use that to install the fan. The question is, do
I need to install a duct through the wall and a vent on the exterior
wall? Or can I just install the fan on the interior wall only? I would
prefer not to touch the outside of the house as the cast iron "brick"
is quite ornate (and 80+ years old) and fits in with the rest of the
house. Would I risk damp getting into the cavity? I'd assume I would be
no better or worse than the current arrangement?

Cheers.

Partially blocking these vents is not a good idea.

small bathroom fans are really hopeless anyway, and not even worth
switching on at bathtime.

Th real solution is to add a lock to the window that enables it to be
locked quarter to half an inch ajar, so no-one can see in but some
ventilation occurs.

Compared to a fan:
cheaper to buy
cheaper to install
no run cost
silent
much longer lived and more reliable
more pleasant in use.


NT