Heating and cooling system using ground air

A heating and cooling system for buildings comprising a building structure having a peripheral wall, a roof and below ground enclosed basement space, an enclosed space above the basement space, a floor separating the basement space from the enclosed space above the basement space, said peripheral wall including a plurality of vertical air ducts in communication with the basement space, said air ducts in the peripheral wall terminating in inwardly extending air ducts below the roof communicating with a discharge adjacent the roof to provide flow of air between the basement space and the discharge adjacent the roof for vertical flow of air through the walls of the enclosed space above the basement space, said vertical air ducts covering substantially the entire peripheral wall of the enclosed space above the basement space to heat or cool the peripheral wall and the enclosed space above the basement space and prevent migration of ambient air between the outer and inner surfaces of the wall, the inner surface of said wall including means providing a vertical air passage between a point adjacent the floor and a point spaced substantially above the floor, said air ducts in the peripheral wall each including a plurality of spaced sheets defining a plurality of thin vertical air passages extending throughout the peripheral wall and inwardly to the air discharge adjacent the roof.