"robgraham" wrote in message
...

Yes,DD, you're probably right, but 20+ years
ago the concept of heatbanks wasn't universal
and this was the accepted solution AFAIK.
It works for me.

Cable brakes on cars work to a degree too. I don't see makers using them
any more.

BUT, and this may well be relevent
to the OP too, the problem is the lack
of head generally in small older properties to
drive hot water at a useable pressure.

Well use the mains. Their pumps are free.

I have been looking at converting my
system to a heatbank configuration, as
the electric shower is only just acceptable in the
winter and the extending mixer tap in the kitchen
is a joke, all because this is a single storey farm cottage.

Good idea. Keep it on the cold mains.