A cooling unit for a commercial cabinet, such as a freezer, cooler or other climatized cabinet, comprising at least: - a base element having a first contact surface for contacting a second contact surface of a commercial cabinet and a third contact surface for contacting at least one top element; - where the top element is configured to be placed over at least a part of the base element and has a fourth contact surface for contacting the third contact surface; - where an evaporator is in communication with at least a first air channel and a second air channel (23, 23a, 23b) which are configured to lead air from an inlet to the evaporator and further out of an outlet (22, 22a, 22b), wherein the inlet and the outlet (22, 22a, 22b) are arranged in the first contact surface; - where the evaporator is furthermore in communication with a condensing unit via a fluid channel for leading a condensate, such as water, from the evaporator to the condensing unit; - where the condensing unit at least comprises a reservoir for receiving and holding the condensate and means, such as a compressor, arranged relative to the reservoir for evaporating the condensate in the reservoir, characterised in that - the base and top elements (2, 3) are made from a foamed material and comprises mounting elements (24, 25) for receiving and holding at least the evaporator and the condensing unit, wherein the mounting elements (24, 25) are shaped to follow the contours of that unit for fixating that unit relative to the base or top element (2, 3); and - that the base and top elements (2, 3) are shaped to form at least two enclosed chambers when assembled in which at least the evaporator and the condensing unit are arranged, wherein the inlet and the outlet are arranged in opposite ends of the first contact surface. - a base element having a first contact surface for contacting a second contact surface of a commercial cabinet and a third contact surface for contacting at least one top element; - where the top element is configured to be placed over at least a part of the base element and has a fourth contact surface for contacting the third contact surface; - where an evaporator is in communication with at least a first air channel and a second air channel (23, 23a, 23b) which are configured to lead air from an inlet to the evaporator and further out of an outlet (22, 22a, 22b), wherein the inlet and the outlet (22, 22a, 22b) are arranged in the first contact surface; - where the evaporator is furthermore in communication with a condensing unit via a fluid channel for leading a condensate, such as water, from the evaporator to the condensing unit; - where the condensing unit at least comprises a reservoir for receiving and holding the condensate and means, such as a compressor, arranged relative to the reservoir for evaporating the condensate in the reservoir, - the base and top elements (2, 3) are made from a foamed material and comprises mounting elements (24, 25) for receiving and holding at least the evaporator and the condensing unit, wherein the mounting elements (24, 25) are shaped to follow the contours of that unit for fixating that unit relative to the base or top element (2, 3); and - that the base and top elements (2, 3) are shaped to form at least two enclosed chambers when assembled in which at least the evaporator and the condensing unit are arranged, wherein the inlet and the outlet are arranged in opposite ends of the first contact surface.