A refrigerated display case (20) having at least one unit composed of a plurality of wall assemblies, namely a bottom assembly (22.3), a rear wall assembly, and a top assembly (22.1), which delimit a cooling space at the bottom, the rear, and the top, and having a cooling unit (1) whose components include at least one evaporator (11), one condenser (13, 13′), and one electric control unit (15). An environmentally friendly refrigerated display case (20) is achieved in that the cooling unit (1) includes at least two closed refrigerant circuits (10, 10′), which convey propane as a refrigerant and are each provided with a compressor (12, 12′), and in order to variably control the cooling output, at least one compressor (12, 12′) is embodied with a speed regulation and at least one compressor (12, 12′) is embodied for operation at a constant speed.