Ground source heat pumps, also known as ground source heat pumps, tap into the relatively constant temperatures in the ground or water to provide heating, cooling, and hot water for buildings. By taking advantage of the sun's warming of the Earth, these systems use 25% to 50% less electricity than traditional air source heat pumps. https://medium.com/@rokadevaishnavi51/geothermal-heat-pumps-an-efficient-way-to-heat-and-cool-your-home-in-global-market-ef58845cd214