All this talk about repl/new windows! My vinyls have been in my house for 20 years, mint condition. They're so efficient all they did was turn my house into a chimney! *All the heat was rising up through the attic.

I had to beef up my attic insulation to match, and now the boiler runs about 1/3 as long as it used to.

Lesson? Heat RISES . Very little escapes sideways, through windows. *So insulate that attic, the floor only, unless it will be lived in. *Repair cracked plaster ceilings or replace with sheetrock. *This will eliminate drafts creating the illusion of worn out windows & doors.

And only then, replace windows when they are really loose or dont stay up. *Better off repairing/retrofitting doors - a lot more "drafts" can be eliminated that way.

#1. Insulate attic & tighten up ceilings.($$)

#2. Doors.($$$$)

#3. Windows($$$$$$!)