Abstract: A solid sorption heat pump is provided that includes an adsorber/desorber unit including a heat exchanger and a solid sorption material. The adsorber/desorber unit is placed in a common housing, which is sealed against the outside atmosphere, together with a condenser/evaporator unit, and the adsorber/desorber unit and the condenser/evaporator unit are separated from one another by an adsorbant-permeable element. The adsorber/desorber unit includes a thermoconductive absorbent holding body, which is connected in a thermoconductive manner to the heat exchanger. The absorbant holding body holds the sorption material, and provides stability to the adsorber/desorber unit. The interior of the common housing is subjected to the action of a negative pressure.