Method for adjusting the temperature of an object (2, 21, 36) by means of a heat carrier medium conducted in a line network (2, 22, 37), in which line network (3, 22, 37) a conveying device (8, 28, 40) for conveying the fluid, a heating device (4, 31, 38) and a cooling device (5, 23, 24, 39) for heating and cooling the heat carrier medium, and a first heat store (6, 7, 26, 27, 42, 43, 44) and a second heat store (6, 7, 26, 27, 42, 43, 44) for storing thermal energy are integrated, wherein a minimum temperature T 1 is maintained in the first heat store (6, 7, 26, 27, 42, 43, 44) and a maximum temperature T 2 is maintained in the second heat store (6, 7, 26, 27), with T 1 ≥ T 2, characterized in that, - with the cooling of the object (2, 21, 36) in the line network (3, 22, 37), which object is at a temperature of T > T 1 beforehand, firstly a flow connection between the cooling device (5, 23, 24, 38), the object (2, 21, 36) and the first heat store (6, 7, 26, 27, 42, 43, 44) is established, wherein the heat carrier medium which heats up upon thermal contact with the object (2, 21, 36) is fed to the first heat store (6, 7, 26, 27, 42, 43, 44) until the temperature T 1 in the first heat store (6, 7, 26, 27, 42, 43, 44) is fallen below, and subsequently the flow connection to the first heat store (6, 7, 26, 27, 42, 43, 44) is interrupted, and/or, - with the heating of the object (2, 21, 36) in the line network (2, 23, 37), which object is at a temperature of T < T 2 beforehand, firstly a flow connection between the heating device (4, 31, 39), the object (2, 21, 36) and the second heat store (6, 7, 26, 27, 42, 43, 44) is established, wherein the heat carrier medium which cools upon thermal contact with the object (2, 21, 26) is brought into thermal contact with the second heat store (6, 7, 26, 27, 42, 43, 44) until the temperature T 2 in the second heat store (6, 7, 26, 27, 42, 43, 44) is exceeded, and subsequently the flow connection to the second heat store (6, 7, 26, 27, 42, 43, 44) is interrupted. - with the cooling of the object (2, 21, 36) in the line network (3, 22, 37), which object is at a temperature of T > T 1 beforehand, firstly a flow connection between the cooling device (5, 23, 24, 38), the object (2, 21, 36) and the first heat store (6, 7, 26, 27, 42, 43, 44) is established, wherein the heat carrier medium which heats up upon thermal contact with the object (2, 21, 36) is fed to the first heat store (6, 7, 26, 27, 42, 43, 44) until the temperature T 1 in the first heat store (6, 7, 26, 27, 42, 43, 44) is fallen below, and subsequently the flow connection to the first heat store (6, 7, 26, 27, 42, 43, 44) is interrupted, and/or, - with the heating of the object (2, 21, 36) in the line network (2, 23, 37), which object is at a temperature of T < T 2 beforehand, firstly a flow connection between the heating device (4, 31, 39), the object (2, 21, 36) and the second heat store (6, 7, 26, 27, 42, 43, 44) is established, wherein the heat carrier medium which cools upon thermal contact with the object (2, 21, 26) is brought into thermal contact with the second heat store (6, 7, 26, 27, 42, 43, 44) until the temperature T 2 in the second heat store (6, 7, 26, 27, 42, 43, 44) is exceeded, and subsequently the flow connection to the second heat store (6, 7, 26, 27, 42, 43, 44) is interrupted.