Came across a pretty good high level video discussing the various approaches. Is Geothermal Heating and Cooling Worth the Cost? Heat Pumps Explained - Undecid

Came across a pretty good high level video discussing the various approaches. Is Geothermal Heating and Cooling Worth the Cost? Heat Pumps Explained - Undecided with Matt Ferrell https://www.youtube.com/watch?v=PI45yUhUWgk https://www.youtube.com/watch?v=PI45yUhUWgk Seems like closed loop (i.e. basically contained refrigerant in a pipe) seems to avoid the issues with contamination that results from the open loop systems.