How Much Can New Windows Really Save on Energy Bills?
Salespeople promise dramatic energy savings from new windows. Here’s what the DOE and ENERGY STAR data actually say — realistic numbers, no hype.
Energy Efficiency & Savings
U-factor, SHGC, ENERGY STAR ratings and how efficient windows pay back over time.
Window Energy Ratings Explained: U-Factor, SHGC, ENERGY STAR
Window energy ratings look like alphabet soup. This plain-English guide decodes U-factor, SHGC, and ENERGY STAR so you know exactly what you’re paying for.
Are Energy-Efficient Windows Worth the Extra Cost?
Energy-efficient windows cost $100–$400 more per window. Honest payback math: when the premium pays off, and when it doesn’t.