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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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Adrian Saunders
We had most of our old wood windows replace by Lifetime. They did a very professional job, the team were efficient and the team leader was extremely particular, ensuring that everything was installed exactly right and finished well. I would strongly recommend. One window arrived with some sort of residue on the glass that they could not remove, so replacement glazing units were immediately ordered. Our service technician, Darian Manzanares, swapped the units over this week. I asked if he co...Read more
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Alyssa Martinez
Appreciate them supporting the zoo!
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Emily Richardson
I appreciate you supporting the zoo.
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Ashley Pitman
We appreciate the support for the Denver zoo! Great company.
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Robert Holtz
Have been trying to get service on windows/door we purchased from Lifetime years age. We have been in contact with Lifetime since June and it is now September, problems we are having with Lifetime windows still not fixed. Lifetime sent a person to look over what the problem was, he look over the windows/door said he would be having someone come out and fix the problem. Since we still have not heard from him, we still have the problems. Also have been in contact with a couple of other people at L...Read more