High-Performance Windows

The Energy Star Most Efficient Designation recognizes the most efficient products among those that qualify for Energy Star. For more information, go to the Energy Star website.

Most Efficient

  • A Window Inc.
  • Accurate Doorwin
  • Andersen
  • Alside Inc.
  • American Exteriors
  • Associated Materials Inc.
  • Capitol Glass/Northerm Windows
  • Champion Window
  • Earthwise Windows and Doors
  • Energy Wall Windows
  • Envirogreen Windows and Doors Inc.
  • Fibertec
  • Grupo Eurowindows Mexico
  • Ideal Window Manfuacturing Inc.
  • Interstate Window and Door
  • Jeld-Wen Inc.
  • Joyce Manufacturing Co.
  • Kensington HPP Inc.
  • Kolbe Windows and Doors
  • Lincoln Wood Products/Timeline Vinyl Products
  • Marvin Windows and Doors
  • Mathews Brothers Company
  • Mercury-Excelum
  • MI Windows and Doors
  • National Vinyl LLC
  • NT Window Inc.
  • Pella Corp.
  • PGT Custom Windows + Doors
  • Polaris Technologies
  • Rosati Windows
  • Seaway Manufacturing Corp.
  • Seven D Industries
  • Soft-Lite LLC
  • Sunrise Windows
  • Value Windows and Doors
  • Vector Windows
  • Vista Window Co.
  • Walsh Windows and Doors
  • Winchester Industries

Passive Windows

  • Alpen High-Performance Products
  • Inline Fiberglass
  • Intus Windows
  • Kolbe Windows & Doors
  • Westeck Windows & Doors
  • Winchester Industries
Additional companies who offer high-performance windows:

  • Advanced
  • Alpen High-Performance Products
  • Altera Windows & Doors
  • Andersen
  • Anlin Window Systems
  • Atrium
  • Clear Concepts
  • Crystal Windows
  • Duxton Windows and Doors
  • Earthwise Windows and Doors
  • Ecoshield Window Systems
  • EnerLux Windows
  • Four Seasons
  • Gerkin Windows & Doors
  • Gilkey
  • Harvey
  • Ideal Window
  • Inline Fiberglass
  • Larson
  • Lindsay
  • MGM
  • Milgard Windows
  • Minnkota Windows
  • Newpro Manufacturing
  • Newtec Windows and Doors
  • Ply Gem
  • Quaker Windows
  • Sage Electrochromics
  • Shwinco
  • Simonton
  • St. Cloud Window
  • Target Windows and Doors
  • Thermal Industries
  • Thermo-Tech
  • THV
  • Unilux Windows
  • Valley Building
  • Vector Windows
  • Vinylmax
  • ViWinTech Window & Door Inc.
  • Vytex
  • Weathervane
  • Westeck Windows & Doors
  • Window Mart
  • Wythe Windows Inc.
  • WinDoor
  • Windows by Unlimited
  • Zola Windows

Attention window manufacturers: If you’re not listed on this page and you offer high-performance windows, contact Tara Taffera at ttaffera@glass.com


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