Quote:
Originally Posted by TechShop
Last fall I dug a couple of trenches and installed some 1-1/4" HDPE irrigation pipe. I have a total of 450 feet of trench with 900 feet of pipe buried. I realize that isn't enough to satisfy a 4-ton system, but I will use these loops to test the ground here this winter. Next spring I will either dig more horizontal loops, or bore some holes depending on the results of my tests. I am leaning toward the vertical loops.
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I was talking to the tech that helped install my geothermal systems A few years ago, he came by at the end of winter after a few years operation to test loop temp. He told me that after a couple years the horizontal system's loops are consistently 2-3 deg Celsius warmer than the vertical systems. He also said they only do vertical systems now, mostly because they work with a drilling company that's just as cheap as doing horizontal and there's less mess...