At Window Headquarters , we provide two things: Quality and Service. Our goal is to be the best and to give our customers personalized service that exceeds their expectations. This simple philosophy is why word-of-mouth advertising from our satisfied customers generates steady growth and most of our new business. We are members of the Better Business Bureau with an A+ rating. 1. All of the windows we use have a Lifetime Warranty. 2. The exterior entry doors we use have a minimum 10-year warranty.