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What other form of heating provides a coefficient of performance, around 5 - 7? That’s the promise, and the reality of ground source heat pump technology. This week I spoke to Senior Hydrogeologist at Geoscience Consulting NZ, Huw Williams about this amazing technology. We discuss if it’s suitable for houses in New Zealand and why Huw is so interested in ground source heat pumps as a sustainable technology.  Links: http://www.nzgeoscience.co.nz/ http://www.nzgeothermal.org.nz/ghanz.html http://www.carbonwarroom.com/