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Immersion heater.
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MJC
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Posts: 138
Immersion heater.
In article ,
says...
A well insulated tank costs more to heat up from cold than keep topped up by
the thermostat.
That is a meaningless comparison.
For any given tank, the energy you waste depends on how hot it is for
how long. You will always waste less by letting it cool down. But that
may be less convenient!
Mike.
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