What makes a “good” window?
Aesthetics aside, I’m wondering what qualifies as a good window from a thermal efficiency and durability standpoint.
In this thread:
Martin himself calculates that the cost difference PER YEAR PER WINDOW for a u-value of 0.2 vs 0.3 is around $1-2 – see thread for specifics.
I’m looking at Atrium’s Reliabilt windows series which have a u-value of 0.27 and a SHGC of around 0.2 (paper not with me right now) vs. a Pella 250 series with a u-value of 0.2 and similar SHGC. Both low-E and argon filled. Both limited lifetime warranty. Yet, a price difference of nearly $250 ($300 vs $550, respectively).
Had a guy out to quote installation, and he said he didn’t think Reliabilt were “good” windows but liked Pella.
So, I’m asking the GBA community: what qualifies as a good window? Thanks for the help.
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