In keeping with the industry tread of building appliances at lower and lower costs, it seems features like compressors, valves, etc. while functional are not as robust.  One common characteristic across mechanical products indicated of cheaper construction is the noise level.  The water valve to fill the ice maker is loud, the compressor is loud, and ice maker itself is loud.    Whether it's refrigerators, washing machines, cars, and even tractors.  The louder the mechanical noise the quicker they wear out.