Capitol wrote:
The IMM suggestion of using a Rinnai heater to supply two simultaneous
showers sounds like a disaster on the way to a happening. Just do a
Google search for the users experience and you won't touch one with a
bargepole!

I haver Googled on the web and the goups and the majority of info is
that the Rinnai is spot on and very reliable. Few negative comments
overall. It is the largest produced multi-point in the world, which
would tell you something.