National Trust house being heated by sea water
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The National Trust house that is heated by sea water

With fears over Russia's hold over gas supplies, Europe's governments are seeking methods to heat homes and businesses that do not rely on gas.

The National Trust is unveiling a new project on Thursday to suck heat from the sea to warm one of its historic homes in North Wales.

It uses a similar technology to refrigeration.

BBC Environment Analyst Roger Harrabin reports.

  • 22 May 2014
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