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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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Pam Gagnier
An appointment was scheduled at a home show and we visited the Lifetime Showroom prior to the appointment. The staff at the showroom was very friendly, knowledgeable and friendly. The appointment went well and the sales rep was friendly, knowledgeable and helpful. All of our questions were answered and we ended up ordering 13 windows and 2 patio doors. There was a same day followup call and email. Looking forward to the installation of the windows and doors.
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Tracy Paskoff
Over the summer, Lifetime replaced all the windows in our home with Marvin Infinity windows. From start to finish, every person involved in that project was professional, knowledgeable, and friendly. We appreciated Dave's honesty and ability to cut to the chase, which was a contrast to salespeople from other companies who had elaborate sales pitches and pricing tiers. We were so happy with the employees and the work they did that we hired Lifetime to replace all the siding on our home with James...Read more
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GenBlue Fun
I got my windows done very recently from Lifetime Windows and I can finally have a good nights rest. I live next to a very busy street and I could always hear the traffic day and night..Since I work overnight it was tough going to sleep with that noise. The moment my windows got done The noise level went down, my home stayed warm, and the great price let me sleep at night. The guys who came to do the installation where not only on time but extremely professional and tidy, didn’t leave a stone un...Read more
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Rose Brainerd
My experience with Lifetime Windows had both good and bad moments. It started badly with salesman telling me it would take 2 months to get on their schedule (which fit my schedule perfectly) followed closely by a phone call saying they would start tomorrow! But I had already paid half so had to totally rearrange my schedule. Communication between salesman and installers was very lacking - installers knew nothing about work the salesman promised would be part of the job. As a result, installe...Read more
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Carol Grammater
The big plus of this experience was the installation crew....EXCELLENT!! Thank you to Freddy, Eric, Robert and Abel......you were polite, respectful, informative, and the hardest working guys we have hired in a very long time........we give YOU 5 stars Generally speaking we felt this experience was worthy of 3.5. Our main entry door is defective and will need to be replaced, one of our bedroom doors was not delivered, and one of the garage windows was measured/ordered wrong. We also had expla...Read more