Lieutenant Scott wrote
Rod Speed wrote
Lieutenant Scott wrote
Rod Speed wrote
Lieutenant Scott wrote
kent wrote
Jim K wrote

nope! Thought of it all by myself! Is it that stupid then?

Only as stupid as having two engines in your car.

Nope, there are a few situaitions where it can make sense.

A 20 bedroomed house?

Don't need anything like 20, just quite a few showers and
the occupants likely to want to use them simultaneously etc.

Whats the point of more than a couple of showers
if you cant use them whenever you like etc ?

Not everyone 'lives' alone in a single shower tiny little hovel.

Either stop insisting on piping hot showers,

I don't in summer. I do in winter.

or have a proper hot water tank so you have unlimited hot water.

No tank is ever unlimited, stupid.