Smart glass (switchable glass) can vary significantly in its U-value and solar heat gain coefficient (SHGC) depending on whether it’s in clear or frosted mode. Smart Glass typically works well in solar control, meaning it can reduce cooling costs by blocking heat.

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How to Know:

You should inquire with the manufacturer for the U-value when the glass is in its clear mode and any energy-saving features when it’s frosted or opaque.