It’s important that the window manufacturer has a quality reputation and has been in business for a long time. This indicates stability to help ensure that parts or additional products will be available, if needed, and that any warranty provided will be serviced by the manufacturer in the future. Question your window dealer, obtain brochures and/or visit manufacturer’s website to learn about the manufacturer and window products offered. Customers can contact the Department of Consumer Affairs and inquire about potential complaints against the window manufacturer.