We're new homeowners. We have a house with ten double hung windows with double panes. They're by Thermal-Guard. They look old, but I don't really know their age. Each window has at least one sash with bad condensation between the panes. Many have condensation in both. Some have discolored film between the panes (?). Some have broken springs.
The question is: Should we replace the complete windows? Or just the bad glass "sealed units" and fix the springs separately (possible?)?
We had a guy from a local glass shop take a look. He's the one that suggested just replacing the glass. But he was high and more than a little creepy, so we don't want him back. (There are other shops, I'm sure.)
But we do have a recommendation for a guy that can replace the complete windows. He's highly recommended by several trustworthy friends (picky skeptical people - engineers). His prices are said to be very reasonable.
So, what do you think? I realize it's a complicated question, but does anyone have advice or an opinion? Thanks for your help.