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Wednesday, February 22, 2012

Tyler Hamilton: Geothermal heating-cooling: Canadians are hot and cold about it (in the Toronto Star)

"...the most efficient geo-exchange systems are as much as 50 per cent more efficient than the best natural gas furnaces and more than 75 per cent more efficient than oil furnaces."

Full article: Geothermal heating-cooling: Canadians are hot and cold about it.