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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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Sarah Otto
We love Lifetime Windows. This was the 2nd time getting windows replaced by Lifetime so we knew the drill ahead of time. Our first time they replaced all of the windows and a sliding glass door to our home before we sold it. They were the best price by far, and did an amazing job with install. Everyone was respectful of our home, cleaned up after themselves, and the windows were beautiful. After moving into our new home, we needed some very large windows replaced. Dee came in and helped alleviat...Read more
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Bill Hull
Peter the company owner went the extra step in ordering the matching window brand to complete our window install that was started five years ago. The pricing was more than competitive. The installation was fantastic, especially since due to the inclement weather, the install had to be complete on a second day. Our install completion was made a priority. The attention to detail on the install was incredible. The crew went above and beyond by making sure that the furniture was covered and prot...Read more
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Denni Bowser
Lifetime Windows was fantastic. The quality of the product and installation far exceeded our expectations. The staff were incredibly friendly and took pride in the work they did. They also ensured that we were happy with the installation that that everything looked the way it should. It is absolutely amazing the difference new windows make in heating/cooling our home as well as a decrease in traffic sounds. We are thrilled with our purchase and would absolutely recommend this company to any inte...Read more
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Pete Allen
Company's salesperson ignored our "no soliciting" sign and left litter in the form of an advertising hangtag on our front porch. I would not trust a company whose salespeople break the law and can't follow simple instructions.
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Glen Robinson
Promises, promises. Very expensive windows but I liked the quality so when I was PROMISED installation within four weeks I bought. 6-1/2 weeks later they were done. And I was promised that my window casings would be sanded and stained to match the windows and I had to fight just to get the ledges done. Very bad company. They did manage to get me the bill five minutes after the job was "done". Please go elsewhere. Do yourself a favor.