Quote:
Originally Posted by Mathgod
Have a look, this guy installed his own system and it didn't cost him that much. Those who have some know-how can save a lot of money.
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So he recommends at least an acre for a closed loop system, and the drawbacks of an open loop make it not usable in Calgary, anyway.
"Each tonne of cooling/heating power I have requires 600 ft of pipe." So that's 7 120 foot trenches for his place. So sure, if you have an acreage, this might be a solution. You also need to be bellow the frost line, and deeper to have much heating return.
He said it would cost 30-40K installed, he did it for $17k USD, but his own labour, and he had an excavator.
This sounds like a pretty niche solution.