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( , Sun 1 Apr 2001, 1:00)
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is a geothermal heat pump, more or less.
Actually, I'm amazed that the basic surface type heat pump isn't used all over in the UK. As long as temperatures stay above freezing they're incredibly efficient, and you lot generally don't get that cold.
( , Tue 23 Dec 2008, 18:05, Reply)
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