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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anncpants67
Love everything about my new windows. I got the Marvin Fiberglass windows. So happy that I went with Lifetime. The process was so easy and very smooth. A two day install. My installers were so great. They even watched out for my pets to make sure that they didn't escape. They took the time to show me how the windows work, how to clean them and how to remove the screens. Such a great upgrade. I have noticed the savings already on my HVAC bill. And the soundproofing from the traffic behi...Read more
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Lynda Englehart
Awesome company from the top down. The new windows and sliding glass door I got are of the highest quality. The install was done very well and the 3 gentlemen were top knotch. Would highly recommend this company.
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Matt Brady
Great company and impressive work!
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Kevin Berger
This was a phenomenal experience. From our initial sales appointment to the ordering and communication until install and then the 2 day installation process. The installers were super nice, professional and well oiled machines! I never expected it to be this slick. And then there’s the actual windows that are beautiful and top quality. The feeling of no heat pounding into the bedroom in the morning was amazing. Should have done this years ago!!😂 I have a lot of confidence recommending this comp...Read more
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Alan Taub
We had all of the windows in our house replaced by Lifetime. They were very knowledgeable during the sales process and the installation was great. All of the people we dealt with were professional, courteous and most of all knew their business