[jeppine]

Would encourage anybody who has a historic home pre-1940s to keep their original windows and just restore them. Unless you get 4 and 6 pane windows, the energy savings are minimal.

Brent Hull is a good resource on historic windows and outlines the reasons to keep them. https://www.youtube.com/watch?v=J6mAmIrN5qY

Plus, the original windows look significantly better and will last longer.

[blacksmith_tb]

"[triple pane] windows saved an average of 12% on heating and 28% on cooling"[1]

That said, if you haven't insulated the walls and attic, windows alone won't do much.

1: https://www.pnnl.gov/news-media/how-triple-pane-windows-stop...

[downrightmike]

Pre 1940 homes were meant to breath. If they don't, they mold and rot

[drewcoo]

Please take Brent Hull with a grain o' salt if you own an old home. Anything pre-catalog is different and does not really fit a recipe. Brent is opinionated but doesn't often broadcast that he's expressing opinion instead of fact.

Love Brent, though! He has a vision of old houses and pushes it.