Why Does Cold Water Thaw Faster Than Hot Water. There is however a caveat. Hot water is heated by the heat of the stove, while cold water is cooled by a refrigerator.
Because diffusion happens from high concentration to low concentration, the more molecules are moving, the more opportunities they have to mix together. So the reason that a bowl of cold water thaws meat much faster, is that it provides much more heat energy for the meat to absorb. Why cold water thaw frozen foods faster than in air?