Posted by VaTom on March 06, 2014 at 05:13:22 from (70.32.203.33):
In Reply to: Re: Solar heating? posted by Bret4207 on March 06, 2014 at 04:19:14:
Bret, what were you reading? Clearly not about PAHS. There is no heat pump, or any other mechanical device. The original PAHS was built in Missoula, Montana, not a mild climate. Any search would have turned up the basis for the book.
As I mentioned, they are successful in almost any climate, whether primarily heating (most of the US) or primarily cooling. Only in an extremely mild climate, like Hawaii, would one not be worth building.
Soil is not necessary, I have almost none on my Virginia mountaintop. Been enjoying my PAHS for 20 years now. The reason there is a mountain here is the rock under it.
Are you are confusing PAHS with ground source heat pumps (often called geo-thermal)? They are an entirely different approach, work well, but expensive.
If you want to learn, look for "Passive Annual Heat Storage". Not "earth-sheltered" or "heat pumps".
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