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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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John Karl Fiechtner
When I was in the market to replace my windows, Lifetime came through with the best numbers, superb customer service and a quality window that fit my budget. When updating homes, the benefits of new windows are long-term, but I had immediate satisfaction with the look, less noise from the outdoors and a noticeable decline in my energy bills. I truly recommend Lifetime for any upgrades. I have been very satisfied with the initial and long-term service they have provided.
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Izaak S
Pros: We initially (Jan '14) used Lifetime to put in a new window into a wall that did not already have one. The install crew was great. They came in and installed a 5x6 window in less than a few hours. Then we had Lifetime come back (June '14) to replace some older wood windows and once again the crew was great. Cons: While everyone at Lifetime has been great to work with (Rebecca in scheduling is very nice), we did have issues with the window manufacturer that Lifetime gets their windows... Read more
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B Stone
My wife and I just remodeled our home in the West Highlands and even though we got a new, more efficient heating system, we were still losing heat from our antique windows. Lifetime came in and not only gave us a great deal but did a great job with the install. Their staff was friendly and fast. They installed 8 windows in only a couple hours and more importantly, they were clean throughout the process. We noticed not only a difference in our heating bills but now that summer has come around ... Read more
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Connie Schafer
Lifetime Windows and Siding installed soffit and facia around my entire home, including the front porch and patio. They did a beautiful job! I highly recommend them to anyone.
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Hannah Lasinski
We recently had all nine of our upstairs windows replaced by Lifetime and are more than thrilled by our new windows. Not only are they very attractive, they have eliminated all the drafts that came from our old windows. Installation took only a day. The crew was very professional, answered my questions and made sure all the windows worked properly before they left.