"RJ" wrote in message
om...
"IMM" wrote in message news:btp98a$937
Replace it with a heat bank. They operate at low pressures. Forget an
unvented cylinder.

If the cylinder needs replacing - then I guess that is a reasonable
idea. However I've read that these [may] need descaling every couple
of years or so - and hence the running costs are very expensive?

Heats banks have a plate heat exchanger. These stainless steell flexible
plates that resist scale. In a hard water areas a phosphor de-scaler should
be fitted anyway, no matter what type of system you have.


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