Literature on Geothermal

Check with IGSHPA…I took some classes with them in the fall of 2024

https://igshpa.org/

If you are looking for information on cost savings of a geothermal vs a standard forced air system, let me tell you about 2 neighbors of mine. They both replaced the geothermal systems that were 20 years old with a Lennox high efficiency gas furnace and a high efficiency A/C system. They are both very pleased with the results. They claim to be saving money on the cost of operation, both summer and winter, and have less service costs. Their geothermal systems consisted of coils of black plastic pipe buried 6' underground. I have no specifications on the geothermal systems installation. They are located in south western Pa.

Fracking really killed the cost benefit of ground source heating. I think a vertical well with closed loop would be much better than coils at 6' but still I couldn't show an operating cost difference between mine and natural gas forced air.

Of course I got very efficient summer cooling also for no additional up-front cost, and I loved how nice the heat pump was.