I am going to replace my old water heater, presently located in the garage. Would like to put the new one in my 4 ft. crawlspace, if I can find one to fit. Where can I find one that is suitable for that? I would think I could set it near the furnace, and tap into the natural gas line there. Also, shouldnt I be able to connect the new water heater vent to the furnace vent?All advice is greatly appreciated, dont really know if this is a good idea.