From the category archives:

Geothermal

DIY Ground Source Heat Pump – Part 3: An Improved Drilling Rig

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by Tim Fulton on September 1, 2009

DIY Ground Source Heat Pump – Part 2: Making A Drilling Rig

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by Tim Fulton on August 26, 2009

DIY Ground Source Heat Pump

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by Tim Fulton on August 18, 2009

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