What
size house do you plan to build? Because, if it's small enough, the back-up heat
for a mini-split can just be plain old electrical heating elements, or a small solid fuel stove.
If oil gets much higher, I will consider solid fuel again. But, for weather like this..
(A mild 22.3F and sunny) A small tight house with a mini-split can be heat cheaply.
Mine cost is about $2 a day right now, and that's with a LOT of air leaks.
~~~
My Den has loads of glass. Not to hard to cool in summer, but heating it?
Just about doubles my cost. I've been keeping one of those oil-filled space
heaters in there, just to keep the baseboard pipe from freezing..
I've been keeping it at 50F at night.
BUT, That's about to end..
Easy Heat wires, only come on when they are needed to prevent freezing!
It's kinda like one of those Gutter-melt wires, but automatic..
Speaking of gutter wires, I've been thinking about the ice that forms
on the Sanyo coil during snow storms.. I wonder if there is an application there.?.