Window Energy Rating IQ Test

Question 1

Think about what U-factor tells you about a window's performance.

Accepted Answer

How well the window insulates

Question 2

Consider what makes windows better for cold winters.

Accepted Answer

Lower is better

Question 3

This rating measures how much solar heat enters through the window.

Accepted Answer

Solar Heat Gain Coefficient

Question 4

Think about which rating tells you how much daylight comes through.

Accepted Answer

VT (Visible Transmittance)

Question 5

This organization's label appears on all rated windows.

Accepted Answer

NFRC (National Fenestration Rating Council)