^^^^ what Javaguvu said
my outside temp is below 35
and it's toasty in my house
new roof
ridge vent
finished basement
replacement windows
all add up to keepin my thermostat at 63-65 tops through winter
and my house is warmer than a mofo
natural gas too
I imagine your house older and charming stilleto
explain your situation
oil heat?
wooden windows
poor insulation?
because with the cold that came here in the northeast, somethin might be wrong to have your house drop to 55 inside
even without heat running
hate to see your heating costs
and your food bill