We were unpleasantly cool this morning in our house. Our temperatures are such that most people on this forum (who are far north of me in North America) would scoff at the idea of burning. We were in the forties for the second night, though, and temperatures aren’t supposed to get out of the sixties, and it will be cloudy. It had dropped to the sixties in our house, and that feels chilly. We lit just a small fire with junk wood. If wood is nice and dry, it will light up easily and burn cleanly. Filling our firebox would have been way too much under the circumstances, but a nice hot fire provides a place for the kids to hang out and not complain about being chilly.I'll check with them but in their brochure the T4 has been crossed out.
You mentioned that having a small fire in the heater is not as efficient - would it be feasible to load it up on a cold morning and just let it burn down to coals over the day with the air supply reduced as outdoor temps increase?
We definitely prefer N-S loading. We harvest all our own wood from our land from necessary trimming and clearing (the property was in pretty bad shape when we bought it). A lot of the wood people on this forum would consider junk, but it works great for us. A lot of it is knotty and twisty, and it’s a lot easier to put in the firebox when there is extra space.
I think that there is a concern that you would overheat with a Super/T5-sized firebox, but that’s if you were trying to maintain a fire 24/7. If you just recognize that you can’t follow all the same burn patterns as folks on this forum who live in very different climates, you can learn not to overheat.
The fact that you have chilly rooms in addition to your main space also means that you could try to move heat there using the fan technique discussed earlier. (I chuckled when you referred to those rooms as “freezing” in your post above.)
I think my biggest concern about a woodstove setup in your climate would be establishing draft if your outdoor and indoor air temperatures are not vastly different. We tend to start fires in the morning when the air temperatures are lowest. Once the fire is established, the draft continues strong even as the outdoor air temperature rises. We also have a very tall chimney.
How tall would your chimney be in your proposed location?