"IMM" wrote in message
...

"Dave" wrote in message
...

I think a couple of people installed Heat Banks last year - what are
your
views having run them for a while?

Can anyone explain the relative merits
of heating the heatbank directly or
indirectly?

When direct "all" the boilers heat goes into the store. When indirect
you
are relying on the efficiency of the coil.

Oh another advantage of having the boiler direct is that boiler cycling can
be eliminated by using two cylinder stats. And there is no limit on the
size of the boiler. The larger the better. So, if a good deal is around on
a large boiler you can get it. Sometimes the difference between a large
output boiler and allow model is only a £100 or so. Well worth spending the
extra on a direct heat bank. Oversized boilers on an indirect coil will
cycle, as when on a normal rad circuit too.