Assertion: heat pump's system | /r/HasProperty | geothermal
Facets:
Source sentences:
text: These systems can be geothermal, heating oil, or natural gas depending on what is optimal for the geographic area.
text: In certain areas, heat pumps can function with geothermal systems, and the heating source is better for the environment because it is not burning fossil fuels and, instead, uses the Earth’s native temperature to heat and cool.