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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Jennifer Munnell
So, I got a quote a few months ago from this company. The proccess was fine and windows were nice, but it's a lot of pressure to commit on the spot, like a car sale. The windows, while nice, were vastly overpriced compared to quality windows from Milgards. Like 60% more than they cost. I got quotes for multiple brands, for both sides of the spectrum of manufacturing, from several different companies across the valley. Absolutely none of them put the kind of pressure or sales tactics on me like t...Read more
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Niki C
Happy I reached out to lifetime it was great experience my first actually . Was a lot of information and things to think about over the holidays. ..Rich.c asked me for my honest review when he left .. I think the Marvin window is beautiful and as It was shared I believe it to be the best window for the Az climate also .. we shall see with the new year brings ..
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Brad Allen
Lifetime replaced my roof after the recent hail storm, and completed the work on time and in an efficient manner. Alex Weishaar was particularly good to work with and I would definitely use Lifetime again.
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MeganJoBell
Just had my free in-home quote a week or so ago. I was very impressed with the representative that came out! Very knowledgeable - went over a lot more above and beyond then anyone else I had out. I didn’t know that there was so much about windows and doors! It was a great experience when I’m ready Richard C will be my first call!
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Norma Hartline
Alex and team work hard and clean. Professional and prompt. Thank you!