It would be installed in a MH I rent out. The intended location is ideal, NG lines directly underneath and a roof vent above it if required. Looking at the HD Reddy Heat units, either the 16K BTU or 30K BTU units. The sq./ft. is 780 and they have a Quad Castille pellet stove, but apparantly that's not enough heat. Are there better options out there? The place is tight, so I am concerned about the "vent-less" leaking and killing them in their sleep. Thoughts?