Drill technology for geothermal heat pump

The device enables the use of pretty stable temperatures below ground level. Such a "heat pump" will only take the relatively constant temperature below ground, and move it into ground level structures in order to facilitate climate control. A heat exchanger and air pump is about all that would be needed, but that really isn't discussed in this video. The video is about the drill tech.

 

I like the concept.(the drill tech)