Earlier quoted context omitted.
But on the other hand there are only so many hours in a day to run your HVAC/space heater. So from 8 hours per day, it can go worst case to 3x.
Hm, heating is either switched off/on depending on a thermostat ("bang-bang") or in more sophisticated systems is regulated according to need (modulating control). It might be on 24/7 regardless of whether it's hot or cold, but it's not going to use the same amount of power.
Upside to being in Indiana is our furnaces are made for this. I think I can keep my house at 70 down to like -30F outside. It’s a pretty expensive furnace though, wouldn’t make sense in Texas.