How To Make A Simple Solar Powered Geothermal Air Conditioning Unit
You can make your own (simplified) geothermal air conditioning unit from an old radiator from a car. This can be used to cool your home, cabin or shed, even a root cellar. The great thing about this project is that it is ran off solar. So this would be a great off the grid cooling system to have.
I absolutely love these DIY projects where you Jerry rig old things together and make something useful, just like this air conditioning unit. I can really see this working well in the hotter areas of the USA. Check out how to make one.