In article ,
DerbyBorn wrote:
Are immersion heaters as efficient as they could be? Could the tubular
element be improved upon - or doesn't it matter?

Since the only thing generated by the electricity they use is heat, where
can it go other than into the water?

(It might also produce 'light' like UV or infra red - but in such a tiny
amount as can be disregarded.)

--
*If love is blind, why is lingerie so popular?

Dave Plowman London SW
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