"Cold" fusion is supposed to initiate at near room temperature, and the act of fusion generates great amount of heat. Theoretically, the heated solution would be passed through a heat exchanger/genorator system much like todays fission reactors.
Fusion is also supposed to cause NO radioactive byproducts, thus nuetering the anti-nuke whackos. Both the actual "hot" fusion and theoretical "cold" fusion models I know of are also NOT self sustaining, meaning no big BOOM in an accident.
Don't forget the Farnsworth Fusor, a little known invention of Philo T. Farnsworth from the 1950's, which produced enough neutrons to be dangerous.
Not srtictly true. If the process produces neutrons of sufficent energy, they will tranmute most elements they come into contact with, ususally resulting in some radioactive isotope of a different element. This occurrs to some extent in fission reactors, which also produce neutrons, and in fact could be said to run on neutrons. One effect is embrittlement of metals in the reactor. In each case this is fairly low level radioactivity and only occurs to those structures and equipment in close proximity to the reaction itself.