"Late Learner" wrote in message
ups.com...
Thanks, doctor, but as of April 2005,
I must only install condensing combis.

I know that. I did say, "You can have non-condensing combis if the plume is
a nuisance." There is an exemption, and a nusiance plume is one.

I need to base my final decision on cost more than space as I
do not plan to stay in this flat for longer than 5 years. Also,
there's a bath, but I only take showers.

A 12 l/min combi will do. A bit slow on the bath but still OK.