Quote:
Originally Posted by AC_Hacker
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You are right. However, the IGSHPA manuals supply tables that indicate the conductivity of various soils. You can still build a perfectly good GSHP system in dry soil, you just need to calculate the size of the loop field correctly. The IGSHP manual guides you through these steps.
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-AC_Hacker
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Yes, but the commercial process doesn't include a geologic study or a follow-up performance analysis. 'Around here' rules of thumb are applied presale. Local knowledge will not always get it right.
Finding the water table will go far to insuring good performance and is likely to also minimize field cost.
IWarm