Geothermal Heating

Definition: A system that uses the earth's constant underground temperature to heat and cool buildings.

Relevance to home energy efficiency: Geothermal systems can significantly reduce energy consumption for heating and cooling by leveraging the earth's stable temperature.

Benefits:

  • Highly efficient, using 25%-50% less electricity than conventional HVAC systems
  • Can provide both heating and cooling
  • Long lifespan with minimal maintenance

Drawbacks:

  • High upfront installation costs
  • Installation can be disruptive to landscaping
  • Not suitable for all locations due to geological factors

Statistics: The U.S. Environmental Protection Agency estimates that geothermal heat pumps can reduce energy consumption—and corresponding emissions—up to 44% compared to air-source heat pumps and up to 72% compared to standard air-conditioning equipment.

Learn about clean
energy for the home.