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Check you local laws, yes there are concerns of erosion and contamination with open loop geothermal units. Here the Province of BC will not allow them anymore. The units already in place have to be tested at least once a year and can be shut down if they show any contamination. I can't see...

We went with Geothermal when we built here in 2005 and I love it. Bit hard to get my head around the concept at first, but think of it as similar to the parts of your fridge and your car's radiator. There is a liquid antifreeze that is pumped through a field, which is a series of coils at 8...