Building support structure deepened into earth has metal armature laid to cavity of earth and concrete mix filling that cavity. As armature construction includes in particular at least one metal pipe part of which is placed lower than level of surface of earth. Openings of both ends of metal pipe are placed at outer side of part of surface of building support construction that is not in contact with earth and are made with possibility of connection to heat pump unit with reverse hydraulic cycle. Building support structure is arranged with provision of protection of metal pipe against direct contact with earth surrounding building support structure and with simultaneous provision of thermal interaction of metal pipe with earth surrounding building support structure. Metal pipe is arranged with possibility for liquid heat carrier to flow through its cavity and formation of inlet and outlet circuits of heat exchanger.