Windows, Doors & More

Energy Ratings

Energy Ratings

Energy Ratings and U-Value Information

Look Up CPD #s 

Visit to see all products categorized with a Certified Product Directory number for permitting

NFRC Resources

Learn More HERE

What is the NFRC?

NFRC (National Fenestration Ratings Council) is a non-profit organization that administers the only uniform, independent rating and labeling system for the energy performance of windows, doors, skylights, and attachment products. The goal is to provide fair, accurate, and reliable energy performance ratings.


Project Planning

Loewen Energy Data 

Learn More HERE

Milgard's Energy Calculator    

Utilize Milgard's energy calculator to assess your project requirements

Learn More HERE

Milgard provides architects and interior designers with an energy efficiency calculator that enables you to select doors and windows to meet your project requirements and energy codes. Once you determine the door and window products you are interested in, contact one of our consultants for additional information, customization and ordering information.