As my knowledge increases with time spent on this forum the question load gets greater. One glaring issue for me is how will vent a unit. My location is such that I will probably vent at the lower area of the wall. Have no chimney. Can someone explain, or direct me to, the differences and applications of a power vent and a direct vent system?? I have come to believe my stove choice will be strongly influenced by the vent location and type.