The other thing that bothers me is their claim that the device converts energy into mass. "A kind of nuclear refrigerator" they say. That would be an endothermic reaction. As far as I know, no one has observed significant endothermic reactions except for chemical reactions in the initial loading of palladium.
At MIT and later at the NHE they shifted curves and moved data points around to produce what looked like endothermic reactions, but that was fake. The NHE did not want to admit that Melvin Miles got significant excess heat, so they shifted his curve down and down until the total equaled zero. - Jed