While this may be novel in residential buildings in the U.S. there are a number of college campuses that have been going this route (providing a large number of

While this may be novel in residential buildings in the U.S. there are a number of college campuses that have been going this route (providing a large number of buildings with heating/cooling/hot water via a centralized system that leverages heat pumps and the earth's thermal mass) for awhile. See for example: https://energynews.us/2022/02/07/colleges-see-untapped-potential-in-geothermal-district-energy-systems/ https://energynews.us/2022/02/07/colleges-see-untapped-poten...