Usually, the hardest part is finding windows that fit and match your taste.
Here is a random product on Amazon, custom cut Low E insulated window panes: https://www.amazon.com/dp/B0DHD4F3HY
I see no reason why the company in this post wouldnt.
There'd be brads to pull at least part-way out to release sashes, though. And the damned cords and all that.
Much easier to re-glaze a removed sash!
My power company sent me an email the following December telling me my energy savings from the previous October, 2023 (that month only), for the same month in 2024, was 31%! When I called the installer and told him, he said a large part of that was prob from leakage around the old windows and the now double panes.
This is because of how the wood around it is framed to provide support to the wall above
I think you're assuming a baseline level of competence that many don't have. I'm comfortable with electrical work and some plumbing but I wouldn't do my own window installation.
Depending on the construction it's not super hard to pull them out and put new ones in, it takes about 20-30 min per window.
What has gone wrong in super capitalistic America that much poorer Romanians, for example, can afford average quality double glazed and triple glazed windows and Americans can't?
1. Why aren't more people trying to get those jobs?
2. Why aren't locals trying to bring workers from low cost of labor areas?