<https://www.inspectorsjournal.com/topic/7096-geothermal-closed-loop-system/#comment-54151>
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"If the glycol and water mixture is wrong and the closed loop (in &amp; out feeds) are icing, does that mean that the system is not producing any heat?  Also, would the controls indicate that the supplemental furnace is actually heating the house?  I have seen just one of these systems and had trouble understanding how the system monitored itself. Any information would be appreciated.  Thanks,     Jeff Beck  Foresight Home Inspection \n"
<https://www.inspectorsjournal.com/topic/7096-geothermal-closed-loop-system/>