Share 'Windows: Different Summer and Winter U values?'
Anyone ever hear of a window, or unit of insulated glass, as having different winter and summer U values?
This wasn't on an NFRC sticker. It was on a glass manufacturer's spec sheet.
They listed it like this:
Winter - Air / Argon 0.35 / 0.31
Summer - Air / Argon 0.32 / 0.28
Our program requires a U value of 0.30 to receive an incentive rebate. So obviously, homeowners and contractors…
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