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Old 01-17-15, 05:09 PM   #10
jeff5may
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This approach seems as if it is an industrial continuous improvement project. In theory, if you have enough solar heat gain and run your ground source close enough to a certain bare minimum, you could save some money by deliberately undermining your ground loop. The sun would then provide the free heat gain that the loop cannot. On a good day in the swing season, you might eveeven heat up the ground.

To me, this sounds rather like suicide. Why not oversize your ground loop? The savings would quickly pay for the extra borehole or spool of pipe. More importantly, there would never be a chance of freezing the loop field.

Last edited by jeff5may; 01-17-15 at 05:14 PM..
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