In article ,
Duane Bozarth wrote:

Well, sure they're going to be an energy leak as compared to a R11+
wall, but there's no sense in not doing something to improve their
efficiency.


Windows, by their nature, are aesthetic. If it was about efficiency you
wouldn't have any at all. The dual pane windows are not as aesthetically
pleasing, IMO. At a minimum, check out insulated glass. I will make sure
all the windows in my house are insulated glass, even the ones that
are currently gas-filled dual glazed.


Dimitri