Howdo,

Just a quick question about fans!

I've been plagued with condensation problems from my bathroom mainly
due to vapour from the batch condensing on the windows and outside
facing wall.

I'm trying to work out what volume extraction rate fan I should install
in the bathroom. I know that you should calculate the volume of the
room and then multiply this by the number of air changes per hour to
get a throughput rate.

My main problem is that some sites say 3 per hour whilst others e.g
http://www.thediyworld.co.uk/the_bathroom.html talk about 20 per hour!!
This obviously has a sevenfold impact on how many cubic metres per hour
is required and hence the fan.

What do you guys/gals out there recommend

TIA Graham