I have had GEO since 1978. I now have two units, they were both open loop drawing from my well. About 3 years ago I put in a closed loop system in my lake for the larger, newer unit. My temperature at my vents dropped from 104 too 80 degrees. I think the reason is the lake temp is 37 degrees vs 61 degrees well temp. I measured yesterday and the difference between the two units is almost 20 degrees. I am wondering why Dwight didn't put the pipe in trenches instead of a lake loop. It would seem to me that the temp in the trenches would be warmer than the lake. we are in the process of building a new lake on new property and I am thinking I will put the pipe in the ground instead of the lake. I am sure there is a reason. thanks for listening Wayne Cooper Charlotte
