On Jul 1, 7:18*pm, Evan wrote:
On Jul 1, 12:36*pm, JIMMIE wrote:

Recently *my HVAC compressor unit was stolen form a vacation home, soon to be permanent residence. *I was thinking about upgrading to geothermal given that there are already 2 400 ft water wells on the property. I am trying to find some meaningful info but so far all I can find is sales pitches even when talking to an installer. Current HVAC was a 4 ton heat pump about 5 years old. Air handler is still in good condition. I am looking for info that will let me know whether or not I can use the wells and/ or the existing air handler.

TIA
Jimmie

Your two wells are nice and all but a ground source geothermal
system is typically spread out over a larger area with coiled
loops of tubing which are buried (larger ground contact area)
rather than narrow wells with limited *ground contact area...

They require a lot of earth moving to install and the size of
a ground contact heat exchanger in your tonnage would be
like digging for a septic system leaching field... *Then you
have all the associated pumping and heat exchanging
machinery which are quite expensive...

Perhaps you should look at either replacing the recently
stolen components with newer more energy efficient ones
as the coils for a geothermal system don't use compressed
refrigerant gas but circulate chilled water which would mean
you can not reuse the existing coil designed for DX gas
type cooling... *Or if you really want to go geothermal
consult an HVAC design engineer, not an installer, to
see just how much more such a system would cost above
and beyond your present guesstimates to see if such
fits in with your financial realities...

If you are looking at trying to be more environmentally
friendly there are other options such as packaged
chiller units with small sealed R407c refrigeration cycles
and are made by Multiaqua or gas fired chiller units which
use an ammonia refrigeration cycle R717 and therefore have
no ozone depleting CFCs which could escape made by
Robur...

It is all a matter of cost and choice, but as far as
geothermal goes you are way off the track if you
are thinking you can use any existing wells for
a ground source system so you might want to
consider other options or realize the actual cost
of going geothermal is much higher than you
are presently assuming...

What nonsense you talk. There are bore hole systems, trench sytems
and surface water systems. Depends on your location and the climate.