### Question
How is the "geothermal heat pump" defined?


### Answer
The term **geothermal heat pump** is defined in *42 U.S.C. § 17061* as follows -

> any heating or air conditioning technology that—


(A) uses the ground or ground water as a thermal energy source to heat, or as a thermal energy sink to cool, a building

#### Citation:
  - *42 U.S.C. § 17061*
  - Heading: **CHAPTER 152-ENERGY INDEPENDENCE AND SECURITY > SUBCHAPTER III-ENERGY SAVINGS IN BUILDINGS AND INDUSTRY**

