At Excel Windows, we take pride in the fact that we’ve been the preferred choice for quality home improvement with exceptional customer service throughout Chicago and the suburbs for nearly 40 years. Family owned and operated since 1977, our dedication to serving our valued customers landed our company an A+ rating with the Better Business Bureau and multiple service awards. Excel Windows does not stop at the point of sale, or even the point of installation. We want to make sure that you’re happy with your replacement windows, entry/storm doors, siding and bathroom remodel for years to come. Our Customer First approach means: - We’re easy to find. We have two locations; Glendale Heights in the northwest suburbs, and Tinley Park in the southwest suburbs. - We’re easy to reach and readily available. Our full-time service staff and 24-hour answering service make sure of that. - We’re fully insured for your protection as well as ours. - Our employees are installation experts, and have decades of experience.