3 ms·

I don't know anything about Iceland but I am using the definition from energy.gov https://www.energy.gov/energysaver/heat-and-cool/heat-pump-systems/geothermal

I don't know anything about Iceland but I am using the definition from energy.gov https://www.energy.gov/energysaver/heat-and-cool/heat-pump-systems/geothermal-heat-pumps https://www.energy.gov/energysaver/heat-and-cool/heat-pump-s... Geothermal works with either vertical holes in the ground or a big loop spread out horizontally. Neither one is very deep nor does it involve hot rocks.

scotty79 5y ago
Ah, geothermal heat pumps is perfectly accurate. Geothermal heat on the other hand is a wider term https://en.m.wikipedia.org/wiki/Geothermal_heating https://en.m.wikipedia.org/wiki/Geothermal_heating of which geothermal heat pumps (ground source heat pumps) https://en.m.wikipedia.org/wiki/Ground_source_heat_pump https://en.m.wikipedia.org/wiki/Ground_source_heat_pump are just a subset.