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Geothermal Heating and Cooling Terminology

Geothermal Energy Efficiency Ratio

The energy efficiency ratio or E.E.R is a metric used to quantify a geothermal heating and cooling system's cooling efficiency. The greater the energy effiency ratio, the lower the energy costs of operating the system and the greater its efficiency.

Geothermal Energy Efficiency Ratio:

Energy Efficiency Ratio =


British Thermal Units per Hour of Cooling Capacity at 95°F
Watts Used by the Geothermal Cooling System at 95°F
Earth River Geothermal - Geothermal Heating and Cooling - Annapolis, Maryland

Geothermal Heat Pump Cost Comparison Geothermal Heat Pump Cost Comparison


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