In message
"Owain" wrote:

"Dane Koekoek" wrote
| The tank is an old copper one with a lagging jacket (no foam
| insulation here!) You can certainly feel that only the top small
| portion of the tank is actually being heated. How can I improve
| on this?

The immersion heater is only heating the water at the top of the tank
because of it's length. It might not be possible to fit a longer one, as
the coil inside may be a physical obstacle.

Ahh, never thought of that!


The *best* approach would probably be to replace the cylinder with a
factory-insulated one with top and bottom heaters/stats, especially if the
boiler is not to be replaced. The bottom heater can be switched on when a
bath is required, and the top heater only is used for small quantities of
hot water (washing-up etc).

Sounds a good idea, and would be something I'd do when the tank needs
replacing...


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Dane Koekoek