On Jul 3, 10:37*am, dpb wrote:
wrote:

...

I am assuming that the replenishment of heat comes from the basement
walls, they are concrete block with no insulation. If the ground in
which they are in contact with is *55 degrees? or so, there would seem
to be a lot of heat transfer if the air in the basement got very
cold.. I will, however, *consider what you have said.

That's nice to assume but don't believe it'll be adequate. *No estimate
of the size of house to heat and I'm assuming it's desirable to keep the
basement at something near a habitable condition.

If there is no restriction whatsoever on that, I it could manage to be a
contributor but would imo not be the economical use of the investment.
Of course, besides the size of the heat sink/source issue, the outdoor
unit would noisy if installed in the house.

The ground source, otoh, would be quite economical to operate.

--

it is an interesting question...

before writing it off.... compare... what is the surface area of the
basment walls compared to the surface area of the buried pipes...?

Mark