Geothermal = Big savings on electricity and gas

  • According to, geothermal HVAC systems can be 300-600% more efficient than traditional HVAC systems on cold winter nights.
  • estimates that geothermal HVAC systems are typically 25-50% more efficient than traditional air-source systems.
  • There is a 30% tax credit allowed on Geothermal installations
  • Geothermal units can heat; domestic water, pools, and hydronic heating systems

geothermalSince 2007, Mainstream has been installing and repairing residential and commercial geothermal systems. The company has had successful installations in over 478 homes, several community centers, assisted living facilities, and government buildings. Mainstream is often called to help with existing installations that are underperforming.

Mainstream has worked on geothermal systems in Tennessee, Kentucky and Ohio. Most systems are closed water loop in; drilled wells, trenches and rivers/ponds. Mainstream has designed pumping stations, recommended pumps and is experienced with fusing high density polyethylene pipe. Many internal piping diagrams have been design build projects.