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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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Jason Rusk
Lifetime installed Marvin windows and sliding door and James Hardie siding. The entire process from pre-sales to project completion was very easy. We were very happy with the windows and the siding. The siding was a major project that took a week longer than expected but Marty Lutz (the Project Manager) kept us up-to-date with the project status. Marty provided excellent post-project support and helped us reroute some external TV antennae wires (including filing holes in the siding). Brando...Read more
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katy dufault
Top notch company! We were referred to them by our neighbors to fix hail damage on our roof, replace gutters and redo our decks. Don came out the next day and brought color samples for everything and within 2 weeks the entire project was complete. We had one little hiccup with the refinishing of the deck and it was resolved within 24 hours and looks perfect. Don was at our home during most of the time the work was being done and was extremely easy to contact with any questions we had and to make...Read more
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Sabrina Morgan
Don and Jeff make a great team. The roof I had them do was for a property I needed to sell. Living 120 miles away makes it difficult to make anything happen. These two made it easy to get the work done without stressing about any piece of the process.
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Bryan Niklawski
Love my windows! I live in a 3rd floor condo and the work was no problem for the installers. Dee was awesome and the windows were ready for install WAY sooner than I expected. Great customer service and a great experience. Thanks so much!
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Kristin Troy Emenecker
Excellent product! I’m so pleased with my new windows. Already I notice how well they block the heat. The install crew was very professional. I’m so happy I made the investment!