Lifetime Warranty. All of The Window Source of DFW products come with a limited lifetime warranty. We offer no money down with 18 months deferred interest. You will have peace of mind knowing that you will only make this investment in your home once. Ask your window consultant for details. Best Price Guarantee. We are confident that you will not find a better price for equal products and services anywhere. If you can we will refund the difference. Ask your consultant for our written best price guarantee at participating locations. Independently Certified NFRC Labels. All The Window Source of DFW products come with voluntary National Fenestration Rating Council (NFRC) labels so that you can compare with confidence. You can rely on the labels and forget about all the sales gimmicks that you may hear from companies charging much higher prices. In fact the US EPA relies on NFRC data to set its ENERGY STAR guidelines. ENERGY STAR Rated Products Be assured that you will gain valuable energy savings when you choose our High Performance Glass option. All of our products ordered with High Performance Glass will meet ENERGY STAR guidelines in all US climate zones. No other source gives you such peace of mind and ease when choosing new windows for your home. Join our growing family of satisfied customers at The Window Source of DFW where America shops for windows and doors. The Window Source of DFW your smart choice. The Window Source of DFW is the new way that American homeowners prefer to purchase windows for their homes. Our process is an easy no-pressure way to select high-quality energy efficient windows for your home at the best price. Our installers are factory trained and your new windows are custom manufactured to fit the exact dimensions of your existing openings. There is a full line of styles and options to choose from to compliment the unique style of your home. Need new windows for your home? The Window Source of DFW makes home improvement easy!