On Jul 3, 8:08*am, wrote:
dpb wrote:
wrote:


Far too small a volume--you'd heat or cool the basement faster than the
rest of the house...

That's irrelevant, since the heat would come from the ground.

In that environment, your best bet is ground source of one kind or
another. *They're great--had one (Water Furnace brand, one of the best).

Nick


That is true, but even without insulation the surface area of the
basement is not large enough to move enough heat. It also is a
problem because over weeks, the temperature of the surrounding ground
will become saturated (heat or cold) and will no longer be efficient.
The standard method is to bury pipes and pump air or liquid though
them. They should cover a large area depending on local ground
conditions and heat - cooling loads.