I suppose this is showing my age but I remember having to stoke the coal furnace in the mornings (grew up in Indianapolis). Hated it at first until I realized the first place to get warm was standing right in front of the furnace door. That lasted for just a few minutes until the dreaded voice from upstairs (the furnace was in the basement, I wasn't receiving messages from "on high"), "Close the door, the draft isn't pulling"!