I have received a few questions (and a lot of bewildered looks from neighbors) about the recent activity at our house. I'm sure there will be more, as the project is to be documented and published in a national co-op publication (no economic advantage to us).
We have decided to "bite the bullet" and install a verticle closed loop geothermo system to provide our HVAC needs. The holes(3) are 200 feet deep and about 12 inches in diameter. The black worms are the piping that will circulate a glycol solution in and out of the holes and through the heat pumps (2).
Our oil furnace (and its associated costs) will be removed.
The project includes removing most of the existing ac duct work and replacing with new. Because of limited space and access, this will require removing part of the second story outside wall.
We are also adding load control to the electric service.
Entire project is to be completed by first of the year.
It will be hectic until then!