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.

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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

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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.