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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Meghan Dill
My recent transaction with Lifetime Windows and Siding was a seamless experience over service, sales, and marketing! Our basement window broke at an inopportune time, as a storm was looming. In looking at online reviews, Lifetime Windows and Siding was among the highest reviewed. My inquiry was addressed promptly, the website was easy to navigate, and the pricing was straightforward. The staff was communicative, able to address my immediate needs, and provided next steps to plan for the fut...Read more
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Kelsey Maloney
Amazing service!!! I had Lifetime Windows replace all of my old wood window with Marvin infinity fiberglass windows, and the transformation is incredible!!! Tim and Justin, the installers, are punctual, proficient, professional and the nicest people! Thank you Lifetime, you guys are true craftsmen. I will definitely be using Lifetime for all my future window needs!
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Kelly Zunker
Overall we have not had a good experience in buying windows from Lifetime. The sales rep - Dave - did a nice job explaining all the benefits of the Marvin windows for our area and we love the windows but it has taken 5 months to get all the windows in and for Lifetime to complete the repairs of the damage they did and we still have one slider with a crack (manufacturer defect we are told). Dave told us "Our installation guys are the best - so much better than the big box chains - and you won...Read more
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Marcy Twelves
We had a great experience with Lifetime Windows. We were referred by a neighbor who had just got new windows and loved them. We decided to talk to them and were sold on the quality of the Marin Infinity windows. Everyone - from the sales rep Dave, the customer service, the install crew, they were all fantastic. And the windows are amazing, could not be happier!
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Krista H
Our new bay window looks amazing!! JD did an great job and got it done fast, it was a pleasure working with Lifetime