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09-01-09, 08:39 AM | #1 |
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DIY Ground Source Heat Pump - Part 3: An Improved Drilling Rig
To make his life a bit easier, AC Hacker decided to build an electric drilling rig.* He did dig a few holes with the manual drilling rig and it worked fine.* However, he calculated that he needed around 200 feet of borehole and decided to make something better. The frame of the drilling rig is made [...]Post from: EcoRenovator.org
DIY Ground Source Heat Pump - Part 3: An Improved Drilling Rig More... |
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