I didnt take offense, I just got the impression I was frustrating you with the lack of detail. And definitely yes, it is both vague, and an attempt to keep options open/remain flexible/see what is possible.I dont think so. When I said "keeping this as vague as possible", another way I could have said it was "keeping options open". IDK if you took offense to the term "vague", it sometimes has a negative connotation for some, not my intent.
Yeah its one of those situations, where the 'blank canvas' is both a blessing and a curse (in that it allows so much flexibility, but also leaves so much open its hard to narrow things down).The OP was just really difficult to work with. Its boundaries were far to broad.
Not space heating with a water heater, possibility of space heating with some of the sources that heat the water (somewhat common in marine, and some vehicle build niches (Skoolies, Overlanders, Boats) to use the engine cooling system for heat, and/or an auxiliary diesel hydronic heater for both water and space heating). For me, I like the idea, but I'm not sure I can justify the cost/complexity if there are simpler solutions that would meet my needs (needs = sink for dish/hand/face washing, wants = occasional showers or at least hair washing maybe).Without direction you start getting ideas for space heating, which by the sounds of it is not something you are looking for.