Several years ago we bought a number of windows for our home from Winodws by Installer. In July, 2013 a seal broke on one of the windows, horribly discoloring the inside of the window. We assumed that like our experience with other big companies, Windows by Installer would try to weasel out of replacing the window, by claiming we had owned it for too long or we must've done something to the window, or whatever. However, when we went to the showroom and told one of the people there our problem, he assured us it was no problem and that their warranty was a complete lifetime warranty.
He took our information, and customer service contacted us within a couple hours. They did not even come out and check the window, but simply verified which window it was and the correct measurements, and ordered new glass immediately. The glass came in two days later, and we scheduled a time for installation. This was done on August 12th. There was no charge at all for the service, not even some minimum replacement charge.
It is truly rare for a company to so totally live up to its lifetime warranty or other promises. We are very thankful we chose Windows By Installer for doing so and we love being able to see out the window.
In addition, the installer was very helpful in two other minor issues in the house at that time. We have never met an individual who was so readily helpful without charge. Thank you guys.