For windows, a U-Value of 0.35 is considered:

For windows, a U-Value of 0.35 is considered:

• A. Bad
• B. Neutral
• C. Very good
• D. Good

Answer: (D)

U-value measures how much heat passes through a window; the lower the number, the better the window insulates. A U-value of 0.35 indicates a fairly good level of insulation for a window: it reduces heat loss in cold weather and minimizes heat gain in hot weather compared to older or single-pane windows. This level is commonly described as Good performance, offering noticeable energy savings over standard but not the highest-performing options (which are typically around 0.25 or lower). So, describing 0.35 as Good reflects its solid energy efficiency without claiming the very top tier of performance.

U-value measures how much heat passes through a window; the lower the number, the better the window insulates. A U-value of 0.35 indicates a fairly good level of insulation for a window: it reduces heat loss in cold weather and minimizes heat gain in hot weather compared to older or single-pane windows. This level is commonly described as Good performance, offering noticeable energy savings over standard but not the highest-performing options (which are typically around 0.25 or lower). So, describing 0.35 as Good reflects its solid energy efficiency without claiming the very top tier of performance.