NT Window Credentials & Awards



Window & Door top 100 rankings are released annually and represent North America’s 100 largest manufacturers of residential windows, doors and/or skylights, based on sales volumes. NT Window made the top 100 list in 2009 and 2010 consecutively.



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As an ENERGY STAR Partner NT Window not only manufactures ENERGY STAR Qualified window and door products, but we are also committed to reducing our energy costs and finding new ways to lessen our impact on the environment.





Energy Star Partner logo


The Green Business Bureau fosters environmental awareness among businesses and promotes business practices that are both environmentally responsible and commercially beneficial. The GBB is a third-party program that provides certification for businesses that follow environmentally responsible practices. NT Window is proud to be a committed Member of the Green Business Bureau.



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Many homes built before 1978 have lead based paint on the walls of the dwelling.  Lead based paint can be a health hazard so before renovating your home, it is important to have a professional certified in Lead Safe work practices for safe removal.



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The American Architectural Manufacturers Association (AAMA) is made up of window, door, skylight, curtain wall and storefront manufacturers, suppliers and test labs. The AAMA Certification Label provides confidence that the products you choose, when installed properly, match the quality of the sample product tested.



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The Efficient Windows Collaborative (EWC) is a consortium of manufacturers, home performance contractors, research organizations and others dedicated to increasing the market share of high-efficiency windows in both the residential and commercial sectors. The EWC promotes energy performance rating and labeling among window manufacturers and educates consumers about the benefits of energy-efficient windows and how to select efficient windows for various climates.



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NARI's Core purpose is to advance and promote the remodeling industry's professionalism, product & vital public purpose. As a member of NARI, NT Window is committed to observe high standards of honesty, integrity and responsibility in our conduct of business.



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NFRC 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 WDDA is the foremost group representing the residential window and door replacement dealer. The primary mission of the WDDA is to represent retail, wholesale and installing dealers of new and replacement windows, doors, skylights and related building products.




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