Take a look at our past work!

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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Ian Williamson
The service and materials were great. Unfortunately, we were promised a promotion that never arrived. We continuously called their customer service department and we're told several different excuses. They told us they would send us the materials but when they didn't arrive we called to call back number they gave us and found that it was disconnected. We asked several times to speak to a manager and every time we're told that the all the managers were in a meeting, day and night. It's been appro... Read more
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Francine L. Kavanaugh
The windows are great. I couldn’t be happier. I haven’t received my utility bill as yet however I have noticed that there is a huge Cut down of noise. I was also so impressed that Mickey called me to see if I was satisfied with everything. I would highly recommend this company
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Mark Makowski
Professionally installed. Everything that I ordered. Looks fantastic I’m enjoyed my new shower too
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Kristine House
Had a great experience with Mike in the service department today. We had a window damaged during installation. Mike handled the replacement. He was prompt, courteous and knowledgeable. Couldn't have been any easier. Thanks Lifetime!
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Micale Stearns
Lifetime was wonderful to work with! From the sales rep to the install and follow up, everything went smooth and efficient. We’ll be doing more windows in our home next year, and will definitely use Lifetime again! The windows are not only beautiful, but there is also zero draft and the temperature in our home is regulated now. Thanks, Lifetime!!