Energy Efficiency

Energy Efficient Windows and Doors


Promo Image: Energy Efficient Andersen Replacement Windows

We publish standard energy-efficiency performance ratings on all our products ratings that are consistently among the best in the industry. Homes with Renewal by Andersen® products can dramatically help reduce their heating and cooling costs.

High-Performance™ Glass

  • 45% more energy-efficient in winter*
  • 56% more efficient in summer*
  • Blocks 84% of UV rays that can damage your drapes, artwork and furniture

*Values are based on comparison to U-Factors and SHGCs for clear glass non-metal frame default values from the 2006 International Energy Conservation Code (IECC).

Fibrex composite material

Our Replacement Windows & Doors