Lived in a depression-era built house in the 50's-60's on the second level with nothing but the trusses showing and melting icicles dripping on the bed and floor in the morning when the parents turned up the oil burner and kerosene heater. 60 miles south of Montreal Quebec on the NY state side.
Believe I have it better now with a %er built in Washington; 34' long. Use an Amish knock off heater and a milk house heater. When in drops below 25 outdoors the big furnace comes on. Life is good here in the Music City TN. area!