Replace Anderson casement windows for 1989?

2 years ago

We just bought a house built in 1990 and will be doing a lot of work inside. We've been asked by contractors if we will be replacing the windows. The work we have planned includes adding 2 windows but otherwise the outside/windows can remain untouched. Is it worth it to update windows now? From what I can find in what the previous homeowner gave me, these are Andersen Perma-Shield High-Performance Casement windows. Looks like the R-rating is 4 which doesn't seem too bad but it there something more I need to consider? How different is 4 vs what available now?

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Comments (3)

oberon476
2 years ago
last modified: 2 years ago
If you want to change windows to upgrade the look of your home, then go for it.

If you want to change your windows because the current ones are falling apart or the glass is all fogged up, or the frames are rotting, then get it done.

However if your only concern is improved energy performance, and the windows are otherwise in good shape, then leave them alone because they are fine as they are.

While the owners manual claim that your current windows are an R4 is at best...optimistic, changing windows strictly for energy performance improvement is rarely justified unless the existing windows are really bad.
Seabornman
2 years ago
If the frames are still good, keep them. Sash and hardware are still available from Andersen (or at least were when I replaced a casement sash a few years ago).
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2 years ago
Definitely keep the old ones.