To provide air conditioning equipment for an ordinary dwelling house utilizing geothermal-heat, capable of temporarily storing the geothermal-heat in a mat foundation concrete layer without specially mounting a heat storage tank, and exchanging the heat with the air in a room.

A first heat exchanger 30 is placed in a steel pipe pile supporting the house, a second heat exchanger 31 is buried in the mat foundation concrete layer 14, a liquid circuit 35 is formed in these two heat exchangers 30, 31 by a liquid circulation pump 33, and the second cold heat medium liquid is filled in an air circulation passage 35 with respect to a space S under a floor 18 and a room 26.