In the garage; the garage also contains our 3 freezers, so we keep it heated. Temperatures can drop into the -20s C or lower during the winter.
We live in a cabin, in the woods of Northern Ontario, Canada. In the past, most of our heating was accomplished with wood and our fireplace. Due to health issues, I am no longer able to cut and split firewood, and the hauling from the woodshed to the cabin is becoming a chore, so we are transitioning to electric heat.