I'm exploring geothermal as a heating and cooling option. I live in Norway which is in eastern LaSalle county. I have contacted several HVAC installers who claim to work with geothermal systems and have gotten the same answers from almost all of them. Either Norway/Sheridan is out of their service area, they don't have technicians familiar with the system, or they are no longer doing installations and only servicing what is already installed. Does anyone know of a reputable geothermal system installer? So far I have only gotten one possibility and they are over 50 miles away. Geothermal has been around at least 25 years and yet no one knows how to work on them let alone install the system. Am I wasting my time?