Quote:
Originally Posted by Fuzz
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.
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Also really depends on the type of ground you have. I know guys who have run into repeated drilling issues trying to do loops.
It gets expensive.
Rough estimates to hire someone to do drilling for 7 120 foot trenches would be around $50k I would say. $5k per loop.
A lot more if you have a ground type where it is hard to drill properly.
Definitely niche.