The Homemade Heat Pump Manifesto

[pachai]

AC_Hacker,
Thanks.
Here's what I am thinking - would love to hear
if this sounds worth considering...

A tiny background - the contractor who is adding 400SF
to the footprint of my house next month...is doing it up the
street today. I saw them using a backhoe today to go
down about 15'.

My thought is to show some of these pictures to my
contractor. He's is a lot like me, in experimenting, etc,
but he has to run a business, and crazy ideas slow him down.
(and heat pump is only the nuttiest...yet :-)

I saw the backhoe dig out 15x30' to 15' deep.
I was wondering - what if he made the hole
30x30', half will be my foundation (carport + basement),
and half will be my trench field.
Then I could do a combination of horizontal and vertical,
and get about 300' of pipe under 7' of dirt.

Alternatively, I could drill horizontally into
the backyard through the retaining wall, but that
would be only about 5'

I just read your suggestion about test holes -
and was thinking along those lines today.
Will hit some kind of supplier tomorrow I guess
to see what I can get.



Thanks
Seth