Re: Brook your ire Sir!
"Anyone care to do a few back of the envelope calculations on heat balance for living in a centrally heated home vis-à-vis the "frozen window pane bedrooms" of the 40s and 50s?"
For me that would be 60s. 70's and into the 80s. Even to this day I keep my window open, love the cold and the joy of getting between cold cotton sheets borders on the monastic mentality.