Since 2014, these have been used by the British Geological Survey to measure the temperature of the water, with the results potentially having huge implications for the city's 124,000 homes, and properties across the UK. The relative stability of ground water temperatures means that ground source heat pumps can be more efficient than air source heat pumps - which transfer heat from the outside air to the water in a central heating system. Getty Images Could the activity of the people on the streets of Cardiff one day help to heat the city?
Published at: 2025-11-05 22:51:43
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