IMM wrote

A Rinnai 32E which saves space as no cylinder, and gives around 25-26
litres/min and does two bathrooms, and NEVER runs out of hot water, and can
be fitted outside

Tricky with my 6L/min water supply!!!

This by far the best solution.
Yes??



To the original poster, go for the system boiler it keeps the plumbing
easy plus you loose the header tank in the loft and keep your existing
hot water tank. Just forget the ranting's of the dual combi tosspot
- although he has now moved on to a combi and a conventional, who
knows given a few million years of evolution he might move on to a
single boiler WITH a hot water tank.

Probably agree with the above boiler advice, but doubt the optimism
about IMM's future development.

Regards
Capitol