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Lifetime Windows & Siding

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Lifetime Windows is a reputable window replacement and installation company with a strong presence in both Colorado (CO) and Arizona (AZ). With a commitment to providing top-quality products and exceptional customer service, Lifetime Windows has earned a stellar reputation in the industry. In Colorado, the company serves residents in Denver, Colorado Springs, and the surrounding areas, offering a wide range of energy-efficient windows tailored to the unique needs of the region's diverse climates. Whether it's combating the harsh winters or scorching summers, Lifetime Windows has the expertise to provide customers with windows that enhance the energy efficiency and aesthetic appeal of their homes. Their skilled team of professionals ensures a seamless installation process and stands behind their work with warranties that give homeowners peace of mind.


In Arizona, Lifetime Windows brings its expertise to cities like Phoenix, Tucson, and Scottsdale, catering to the specific challenges posed by the arid desert climate. They offer a variety of window options that help keep homes cool during the scorching summers while minimizing energy consumption. With a dedication to eco-friendliness and energy efficiency, the company provides residents in both Colorado and Arizona with a valuable solution for enhancing the comfort, beauty, and value of their homes. Whether you're looking to upgrade your windows in the Rocky Mountain state or the desert oasis, Lifetime Windows is a trusted choice for homeowners seeking premium window solutions in CO and AZ.

Our Work

16085 East Warren Place , Aurora, CO, US
  • Infinity: Bronze
Wyandot Street , Denver, CO, US
  • Anlin: White
15446 East Dorado Avenue , Centennial, CO, US
  • Anlin: White
2956 South Willow Street , Denver, CO, US
  • ProVia
13913 Fillmore Street , Thornton, CO, US
  • Infinity: White

Customer Testimonials

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Mike King
We had new windows installed a few weeks ago and from the initial estimate to the final replacement Lifetime Windows was great. We had all 6 windows replaced. At the initial estimate we were told that it would take about 2 months before our windows came in but they actually came in a week and a half later and were installed the following week. The team that came and installed the windows were great; they explained everything and answered all my questions. After they finished the install we noti... Read more
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Sarah Taylor
We're very pleased with our new windows! We hired Lifetime Windows to replace all of the windows in our house this past July. The windows that we replaced were original to our house (built around 2002) and were builder-grade; we opted for triple-pane windows because Lifetime gave us a price with which we were very happy. The basement windows were so poor that wind would just howl in. I use that area for office space, and constantly had a space heater on in the winter. Our second floor would g... Read more
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Jordon Fletcher
I had every window replaced in a three unit building by Lifetime Windows and Siding. They were fast, professional, and friendly. Their prices were extremely affordable and I would definitely use them again.
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Wayne Stewart
We had the original 1957 aluminum windows in our brick and block home. We contacted Lifetime windows after contacting multiple window company's and the Lifetime window products far surpassed the competition in quality and price. Working with this company was a pleasant experience from the original sales call to the finish of our installation. All of our questions and concerns were answered quickly and professionally. The installer were extremely prompt and took care of removing our old windows a... Read more
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Terry Baldwin
Lifetime replaced all 14 windows in our house and I couldn't be more pleased with the overall result. Bottom line: 1) price was right, 2) product quality and installation were both excellent and 3) the entire sales to installation process was very effecient and problem free. Lifetime exceeded my expectations (no easy task I might add) and I would certainly use them again should the need arise. Thank you, Lifetime Windows and Siding.