On Wed, 24 Mar 2010 15:36:11 -0700, wrote:
http://en.wikipedia.org/wiki/GSHP.

The initial costs are considerable though

Where are the costs, though? The way I understand it, it's mostly in the
labour involved in installing the ground loops - which, given the nature
of this group, *could* be handled by the home owner.

Problems I have he

1) Knowledge Commercial installers seem to have the market pretty well
sewn up, and there's comparatively little design knowledge in the public
domain,

2) My 'leccy company gives a huge discount for having a GSHP, but only if
it's a commercial system fitted by 'professional' installers,

3) I can get tax breaks for a GSHP, but hit the same problem as in 2
above.

as time goes on that'll hopefully change - design books will appear,
parts will be available off the shelf etc.

cheers

Jules