Window World operates a total sham of a home improvement company. After I paid nearly twenty five thousand dollars for windows in my four rental properties, I discovered the complete lack of workmanship in the windows from their "exclusive" supplier: Alside Windows. Fully two thirds of the windows are now cracked and or foggy after less than two months. They offer less heat and sound installation than the wooden builder grade windows I had originally. Not only will Window World not honor their warranty, but the manufacturer Alside will not stand behind their product. Both companies are in collusion; pointing at each other for the warranty claims, using each other as a shield. Avoid Alside windows like the plague and understand that every Window World branch uses their windows exclusively.