Device for controlling the climate in a greenhouse, the device being adapted to take up a heating position in which the temperature of the greenhouse is increased or maintained, the device comprising: - a first recuperator with a first series of channels and a second series of channels; - a second recuperator, at least active in the heating position, with a third series of channels and a fourth series of channels; - - wherein the channels (7a, 7b, 8a, 8b) are adapted to mutually transfer thermal energy from fluids present in the channels; - greenhouse supply means (1, 2) leading from the greenhouse to the first series of channels; - outside supply means leading from the outside to the second series of channels; - greenhouse discharge means (3, 4) leading from the device to the greenhouse; and - outside discharge means leading from the device to the outside, - - wherein the greenhouse discharge means (3, 4) connect to the first series of channels and the outside discharge means connect to the second series of channels, characterized in that the device can take up a cooling position, in which the temperature of the greenhouse is reduced, - that in the heating position the third series of channels of the second recuperator is connected between the greenhouse supply means and the first series of channels of the first recuperator and the fourth series of channels of the second recuperator is connected between the first series of channels of the first recuperator and the greenhouse discharge means, and - that in the cooling position fluid passes through only the fourth series of channels of the second recuperator and that the third series of channels of the second recuperator is bypassed. - a first recuperator with a first series of channels and a second series of channels; - a second recuperator, at least active in the heating position, with a third series of channels and a fourth series of channels; - - wherein the channels (7a, 7b, 8a, 8b) are adapted to mutually transfer thermal energy from fluids present in the channels; - - wherein the channels (7a, 7b, 8a, 8b) are adapted to mutually transfer thermal energy from fluids present in the channels; - greenhouse supply means (1, 2) leading from the greenhouse to the first series of channels; - outside supply means leading from the outside to the second series of channels; - greenhouse discharge means (3, 4) leading from the device to the greenhouse; and - outside discharge means leading from the device to the outside, - - wherein the greenhouse discharge means (3, 4) connect to the first series of channels and the outside discharge means connect to the second series of channels, - - wherein the greenhouse discharge means (3, 4) connect to the first series of channels and the outside discharge means connect to the second series of channels, - that in the heating position the third series of channels of the second recuperator is connected between the greenhouse supply means and the first series of channels of the first recuperator and the fourth series of channels of the second recuperator is connected between the first series of channels of the first recuperator and the greenhouse discharge means, and - that in the cooling position fluid passes through only the fourth series of channels of the second recuperator and that the third series of channels of the second recuperator is bypassed.