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Forum: Geothermal & Heat Pumps

03-05-15, 01:03 PM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

If the specs on my GSHP showed CoP falling off...

If the specs on my GSHP showed CoP falling off below 4C, I would surely want a field that could produce above 4C !

Thank you !

Although I would likely never install a loop field, I would...

Forum: Geothermal & Heat Pumps

03-05-15, 09:32 AM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

From my research, in general, most heat pumps...

From my research, in general, most heat pumps start to loose efficiency around 35-45F. Why not pay a few extra $$$ to have a system that will stay ABOVE that threshold. ?

I understand a extra...

Forum: Geothermal & Heat Pumps

03-05-15, 08:52 AM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

Well, I sort of, kind of got the information I...

Well, I sort of, kind of got the information I was looking for (perhaps I did not phrase the question well to begin with).

First, if you Google around you can find charts similar to this one from...

Forum: Geothermal & Heat Pumps

03-05-15, 08:14 AM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

If I ever had a GSHP system installed, there...

If I ever had a GSHP system installed, there would be a "performance" clause in the contract. If my inlet water temp EVER fell below 40F, the installer would have to repair/replace/agument the...

Forum: Geothermal & Heat Pumps

03-04-15, 07:37 AM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

I was reading on another forum about folks who...

I was reading on another forum about folks who had installed horizontal loops at 12-15' deep, actually getting inlet water from their loop well below freezing ! Sure, it has been cold in the Midwest...

Forum: Geothermal & Heat Pumps

03-04-15, 07:33 AM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

Well, I did learn that permafrost is REALLY...

Well, I did learn that permafrost is REALLY PERMANENT ! It can actually go 100s of feet deep !

Forum: Geothermal & Heat Pumps

03-03-15, 07:06 PM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

Sigh. My life's story ! It usually takes a...

Sigh. My life's story !

It usually takes a lot of digging on my part !!

Forum: Geothermal & Heat Pumps

03-03-15, 08:55 AM

Replies: 17

How deep does non-permafrost typically go ?

Views: 11,395

Posted By theoldwizard1

How deep does non-permafrost typically go ?

Areas like the U.P. of MI, northern MN, ME, ND and most of Canada get deep frost, at last 48". These areas obviously warm up enough in summer so that the ground (eventually) does melt.

Are deep...

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