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Low-E
Low-E is a thin coating on glass that reflects heat. It helps control heat loss and heat gain.
Why it matters
Low-E improves comfort and efficiency without changing the look much.
Where people get this wrong
There are different Low-E types. The best choice depends on climate. Low-E does not automatically mean high quality frame or good installation.
Real-world example
You stand by the window on a cold night and it does not feel like the outside is creeping in. Low-E helps create that calmer feel.
Where this hits your build
This affects comfort, energy costs, and indoor air quality. It gets locked behind drywall, so decisions here need to be right before finishing starts.
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