Back in the day my family would go the woods, fell 15 ish cords of hardwood and haul it home where we would block it into stove chunks. It would air dry and then stacked in the basement. When winter arrived we would feed two stoves to heat our 6 bedroom North Shore farmhouse (no insulation). It was never warm but we were healthy and fit.
Today I felt a bit of chill and reached for the remote control to increase the heat pump output by a degree.