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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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Marilynn Crider
Working with the teams from Lifetime Windows has been an easy and positive experience. They were all professional, thorough, friendly, and gave attention to every detail. We started thinking we would love to replace our three sets of sliding doors to our patio. We loved these new sliding doors and quickly realized we needed to replace more. As of today, every window in our home is now new. Each team that came to install a window order was efficient and very good. There is no negative comm...Read more
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Kathryn McGinney
Thanks Brandon, Callum, Gary, Kate, and Josh for you quality work in finalizing my window installation by staining. Looks great!
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Garrison Shipman
Wouldn't invest money into them they are horrible and when they come out to do windows they park all over the place in front of multiple residents taking there parking spaces then they go around and liter and put their garbage stickers all over your house.
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Clay Gilkerson
I don't often review companies, but this was more than a little 'project', this was an investment that my wife and I have made to our home. Lifetime was very good to work with overall. Rebecca MacMillan in their coordination offices was extremely helpful while working around all the details of health, safety, and efficiency. Not everything was perfect (nothing is), but the team at Lifetime has worked to make it as close as possible. I respect that...
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Julia Norton
Mark at Lifetime windows was very knowledgeable about the products that they sell and very kind in his explanation and very thorough on his installation explanation. Out of the 3 companies that we reviewed and had quotes for, we chose with Lifetime for their product and their price. The installation was thorough, quick and very nicely done. Everyone has been so professional in there jobs and professional in their installation, sales and at the office.