Window and Door Manufacturers: Customer Ratings

Windows are a big investment, and while they may look great on paper, how well do they hold up once installed? Do they meet your performance specifications? How responsive was the company to answering your questions and responding to complaints?

The GreenSpec team has already combed the world of windows available in the U.S. and Canada for manufacturers that can meet our tough performance specifications.

We asked for your help in providing ratings based on your actual experience as a customer—things like like whether the window failed the year after it was installed and the distributor won't return your phone call, or whether the manufacturer easily met your specs and installation was a dream. We received 166 responses to our survey covering 44 manufacturers of high-performing windows. (Scroll down below the results for more on the survey questions.) The results are below.

Want to learn more? Click on the manufacturer name for access to product specifications, manufacturer resources, and more reviews in GreenSpec. For guidance on how to choose windows, including navigating cost and performance considerations, see our special report, Better Window Decisions: Mastering the Performance and Cost Options.

Manufacturer Overall Quality Service Cost Comments
Accent Windows 2.5 2.0 2.5 2  
Accurate Dorwin Windows 3.5 3.0 3.0 4
Andersen Windows 3.5 3.0 3.5 3
Bieber Architectural Windows 3.0 3.0 2.5 4
Comfort Line Windows 2.0 2.0 2.5 3
Drewexim Windows 2.5 3.0 3.0 3  
Duxton Windows 2.0 2.5 2.5 2
Energate Windows 2.0 3.0 2.0 3  
Fibertec Windows 3.0 3.5 3.0 3
Gienow Windows 1.5 2.5 2.0 3  
Gilkey Windows 3.0 3.0 3.5 3  
Gorell Windows 2.5 3.0 3.0 3
Great Lakes Windows 3.0 3.0 3.0 3  
Hurd Windows 3.0 3.0 3.0 3  
Inline Windows 3.0 3.5 2.5 3
Intus Windows 3.5 4.0 3.5 3
J.S. Benson Custom Wood Windows 3.0 3.5 3.0 4  
Jeld-Wen Windows 3.0 3.0 3.0 3
Kolbe & Kolbe Windows 3.5 3.5 3.5 4
Linwood Windows 3.0 2.5 3.0 4  
Loewen Windows 3.5 4.0 4.0 4
Marvin Windows 4.0 4.0 4.0 4
Milgard Windows 3.0 3.0 3.5 2
Optiwin Windows 4.0 4.0 3.5 4  
Owens Corning Innovision Windows 1.5 2.0 2.5 4  
Paradigm Windows 2.5 2.5 2.5 3  
Paramount Windows 1.5 1.5 1.5 3  
Pazen Windows 2.5 3.5 2.0 3  
Pella Windows 3.5 3.5 3.5 4
RainShield Windows 2.0 3.0 2.5 1  
Rieder Windows 2.5 3.5 3.5 2  
Schüco Windows 3.0 4.0 3.0 4  
Serious Windows 3.0 3.5 3.0 4
Silber Windows 2.0 2.5 2.0 3  
Sorpetaler Windows 1.5 3.5 2.5 4  
Stanek Windows 1.5 2.5 3.0 2  
Thermal Industries Windows 2.5 2.5 2.0 3  
Thermotech Windows 3.0 3.5 2.5 4
THV Compozit Windows 2.5 2.5 3.0 3  
UniLux Windows 3.0 3.5 2.5 4  
Wasco Windows 3.5 3.5 3.0 3
Weather Shield Windows 2.5 2.5 2.5 3
Willmar Windows 1.5 1.5 2.5 2
Zola Windows 3.5 3.5 3.5 3

Survey Background

Customer ratings are based on results from 166 participants. Most respondents rated only a handful of manufacturers, so the ratings of individual manufacturers are based on anywhere from 3 to 73 responses.

The following questions contributed to the ratings shown above.

Based on your experiences, how do you rate the quality of these windows and their ability to meet your performance specifications? In providing your rating please draw on any experiences you may have in purchasing, installing, and/or using and observing the windows following installation.

Based on your experiences, how do you rate the quality of the customer service provided by this window manufacturer, or an official distributor? In providing your rating please draw on any experiences you may have in talking to reps, receiving quotes, making purchases, receiving timely delivery, and any follow-up during or after installation.

In your experience, how much do these windows cost? Please rate on a relative scale from 1 to 5. Note: this is an evaluation of price, not value.

Based on all of your experiences and knowledge, what overall rating do you give these windows? Please factor in quality, customer service, price, as well as your perceived value.