Bob wrote:
Personally, I'd probably keep the traditional system (you'll then still have
an immersion for emergency backup for when (not if) the boiler fails). You
just need a bigger hot water tank.


Bloody hell! Commonsense at last. You are obviously a heretic living
dangerously round here! I agree, and it's worth keeping a loft tank for
when the water company fails to deliver the service their propaganda
promises.

Regards
Capitol