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NFRC label
The NFRC label is the window performance label that lists ratings like U-factor and SHGC.
Why it matters
It lets you compare windows using consistent measurements instead of marketing words.
Where people get this wrong
Two windows can look identical and perform very differently. A good label does not guarantee good installation.
Real-world example
You compare two bids and both say energy efficient. The NFRC label gives you numbers so you are not guessing.
Where this hits your build
This comes up during selections and installation. Performance depends on the product and the install. A good window installed poorly still leaks.
Most people do not just struggle with terms. They struggle with the decisions tied to them.
See how HouseChalk helps with the decisions behind terms like this