Laundry treatment apparatus, in particular dryer or washing machine having drying function, comprising: a laundry storing chamber for treating laundry using process air, a process air loop for circulating the process air through the laundry storing chamber, a motor for driving the rotatably supported laundry storing chamber and/or for driving a process air blower (58, 58a) arranged in the process air loop, and a heat pump system for dehumidifying and heating the process air, the heat pump system having a refrigerant loop comprising: a first heat exchanger for heating a refrigerant and cooling the process air, a second heat exchanger for cooling the refrigerant and heating the process air, a refrigerant expansion device arranged in the refrigerant loop, and a compressor arranged in the refrigerant loop, wherein the first and second heat exchangers (46, 48) are arranged in a process air duct section of the process air loop which is located in a base section (42, 42a, 42b) of the apparatus, characterized in that the process air duct section is arranged in a middle region of the base section (42, 42a, 42b), a first region (II/III) of the base section (42, 42a, 42b) is provided at a first side of the process air duct section, wherein the first region is adapted to receive or supports at least one component of the apparatus and/or the heat pump system, and a second region (III/II) of the base section (42, 42a, 42b) is provided at a second side of the process air duct section, wherein the second region is adapted to receive or supports at least one component of the apparatus and/or the heat pump system, wherein the process air duct section is arranged between the first and second region (II, III). a laundry storing chamber for treating laundry using process air, a process air loop for circulating the process air through the laundry storing chamber, a motor for driving the rotatably supported laundry storing chamber and/or for driving a process air blower (58, 58a) arranged in the process air loop, and a heat pump system for dehumidifying and heating the process air, the heat pump system having a refrigerant loop comprising: a first heat exchanger for heating a refrigerant and cooling the process air, a second heat exchanger for cooling the refrigerant and heating the process air, a refrigerant expansion device arranged in the refrigerant loop, and a compressor arranged in the refrigerant loop, wherein the first and second heat exchangers (46, 48) are arranged in a process air duct section of the process air loop which is located in a base section (42, 42a, 42b) of the apparatus, characterized in that the process air duct section is arranged in a middle region of the base section (42, 42a, 42b), a first region (II/III) of the base section (42, 42a, 42b) is provided at a first side of the process air duct section, wherein the first region is adapted to receive or supports at least one component of the apparatus and/or the heat pump system, and a second region (III/II) of the base section (42, 42a, 42b) is provided at a second side of the process air duct section, wherein the second region is adapted to receive or supports at least one component of the apparatus and/or the heat pump system, wherein the process air duct section is arranged between the first and second region (II, III). a first heat exchanger for heating a refrigerant and cooling the process air, a second heat exchanger for cooling the refrigerant and heating the process air, a refrigerant expansion device arranged in the refrigerant loop, and a compressor arranged in the refrigerant loop, wherein the first and second heat exchangers (46, 48) are arranged in a process air duct section of the process air loop which is located in a base section (42, 42a, 42b) of the apparatus, characterized in that the process air duct section is arranged in a middle region of the base section (42, 42a, 42b), a first region (II/III) of the base section (42, 42a, 42b) is provided at a first side of the process air duct section, wherein the first region is adapted to receive or supports at least one component of the apparatus and/or the heat pump system, and a second region (III/II) of the base section (42, 42a, 42b) is provided at a second side of the process air duct section, wherein the second region is adapted to receive or supports at least one component of the apparatus and/or the heat pump system, wherein the process air duct section is arranged between the first and second region (II, III).