Great Lakes Window Installers

Great Lakes Window is a Midwest company, based out of Toledo, Ohio which uses state-of-the-art technology to build lasting windows. Great Lakes Window is a very forward thinking company and is right on the cutting edge of energy efficiency and is affiliated with the following organizations: Energy Star, Window & Door Manufacturers Association, National Fenestration Rating Council and the United States Green Building Council. Great Lakes Window also meets the National Accreditation and Management Institute’s standard for air, water and structural performance. With affiliations like those, it’s easy to see why Great Lakes Windows are so popular throughout Chicagoland.

American Thermal Window is proud to partner with Great Lakes Window to offer some of the best windows in the industry to Chicago.

Great Lakes Window Products

Great Lakes Window offers a large variety of window styles with multiple customization options. No matter what type of window you are looking for Great Lakes Window has you covered with style like double-hung windows, sliding windows, casement windows, awning windows, picture and shaped windows, bay and bow windows, garden windows, basement windows and patio doors. Once you have selection a window style additional options include glass, color, and hardware. Great Lake Window features three different product lines, which are:


Great Lake Window’s ecoSmart windows focus on energy efficiency. Reinforced for durability and longevity ecoSmart windows will last for many many years and are a great investment when replacing old windows on your home. Thanks to their SmartCore Insulation ecoSmart windows offer twice the insulation of typical fiberglass window insulation.


ComfortSmart windows are designed to seamlessly match your home and provide excellent views of the outside. ComfortSmart windows are an elegant choice for your home but don’t compromise on energy efficiency either. Great Lake Window’s ComfortSmart line is the ultimate choice if you want the most customization options.


HarborLight windows and patio doors are durable and easy to maintain windows and patio doors. Easy to customize HarborLight windows and patio doors have a classic look and will last for many years.

American Thermal Window is Chicago’s Best Great Lakes Windows Installer

American Thermal Window has decades of experience selling windows and doors in the Chicago area. Over the years American  Thermal Window has grown into Chicago’s highest rated window and door company. As a family owned and operated business American Thermal Window prides itself on offering quality service and products and Great Lakes Window manufacturers beautiful long lasting windows and sliding glass doors.

The entire team at American Thermal Window is happy to help in answering any questions on the Great Lakes Window product lines. Our sales team is very knowledgeable and can assist in choosing the perfect Great Lakes Window windows to suit your home improvement project.