I always put an extra layer on but then again I have an awful heating system which is either 'on' or 'off' with no inbetween.. So I leave it until it gets really cold before i turn it on..
I hope not... it's been SUMMER in Pa the last 6 months. Unless you use electricity or firewood, your gas bill is about to go a lot HIGHER. I was in Erie in 77 or 78? and we had 8 ft of snow. We had to climb out a window on the second floor.