This is an interesting topic. Particularly as I try to work out where all you guys are, how cold it may be and how big a cord of wood is!
We run a wood burner as our primary source of heat for our house over winter. We live near Bathurst, which is known for being cold be Australian standards, but is pretty mild compared to where many of you guys are in the North. Decent snow here is a once in a generation thing, though the surrounding area will get a couple of small dumps each year.
Compared to the US and Europe, Australian houses are generally poorly insulated. No big deal for most mild winters, but pretty poor come summer time! My house is relatively well designed and insulated. We have a big wood burner located centrally and through winter we pretty much run it day and night. That said, for most of that we have it just ticking over with a couple of logs on the side. The house is roughly 6000sq ft.
My shed has no heating, cooling or insulation. It is just a tin box. Unfortunately i don't get to spend enough time in there to justify insulating it at this stage.
As for a quantity of wood, Australians have three units of measure: cubic metre; tonnes; ute/trailer load! Obviously the last one is quite subjective. We go through roughly 12m3 of firewood. This equates to 424 cubic foot or roughly 3 cords.
The wood we burn is a mix. At my place we have Red Box and Yellow Box (both Eucalypt) which burn really hot and clean but my place is hard to access due to being on the side of a hill. My in-laws farm has heaps of Peppermint and Brown Barrel/Black Butt (more eucalypt), which don't burn quite as hot, but is easier to access....and they have a tractor with front end loader....and a hydraulic lo splitter 😁 As such we make a mix of roughly 1/3 of our wood and 2/3 theirs. As my father in-law gets older I am doing more and more of their wood cutting and splitting. They gave me Stihl MS 391 for my birthday a couple of years ago, knowing full well much of its use would be for them 🤣