Dale Hodgins wrote:I think, for me the simplest thing will be to just grow coffee. This coffee growing under the coconuts doesn't get pruned or watered or anything, and they get lots of beans. The family doesn't call it shade-grown organic, but they don't do anything to it and it grows in the shade, so that's what I'm calling it.
William Bronson wrote: A wood pellet burning boiler might fit your needs.
You would still be dependent on an outside source of fuel, but it is at least not fossil fuel.
Outdoor wood boilers allow you to use less refined fuel, but also tend to be burned in the dirtiest way possible, specifically to stretch the times between tending.
They still need to be fed everyday.
Your house sounds large, do you have a basement?
If so, a wood fired boiler that could feed a huge hot water storage could be ideal.
You could run the boiler wide open to get the cleanest most efficient burn possible while capturing the heat in the hot water storage.
That storage would be there to keep the house above freezing while you are away.
Indoor and outdoor wood fired boilers are common, large amounts of storage , less so, but:here is one example of a commercial thermal mass product.
Douglas Alpenstock wrote:Hi Michelle. Yeah, costs have gone crazy. Ouch.
Fuel oil is a tough fuel to replicate in a way you could reasonably trust whilst away. It's sort of in the kerosene-diesel zone, with additives to prevent corrosion, gelling in extreme cold, degradation, clogging etc. Quite the witches' brew, phew.
It is possible to winterize, such as is done for seasonal cabins, where all the water lines are blown out with compressed air and the sewer traps are fortified with substances that will not freeze into a destructive, expanding plug. It can be done, but I wonder what would protect your cast iron radiators from catastrophic damage.
Sorry, no easy solutions that I can see right off, outside of someone staying on site while you are away.