Passive Annual Heat Storage: Improving the Design of Earth Shelters (2013 Revision)

Passive Annual Heat Storage (PAHS) is a method of collecting heat in the summertime, by cooling the home naturally, storing it in the earth naturally, then returning the heat to the home in the winter. It includes extensive use of natural heat flow methods and the arrangement of building materials to direct heat from wherever you get it to wherever you want it, all without using machinery to make it work. Wit...