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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Heather Kelly
We were looking for three patio doors at the Home and Garden Show in Denver in 2024. The sales people were professional and courteous. They were able to schedule a consult for us. The doors arrived early, installation was within a week, and the process of finishing the doors was fantastic. There was a lot of good communication between us and Lifetime during the whole process. Great attitude, great service, great doors! Thank you, Randy and Heather
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juanita Gutierrez
Purchased half the windows for our cabin in Jefferson, Co. In March and they were installed this last weekend. Really made a huge difference both in looks and fiction so we decided to do the rest. George G. The salesman and John the installer were great. They have made the experience easier than expected. I would recommend them and Lifetime windows to anyone.
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Don M
I recently ordered and had installed 6 windows and a Sliding glass door from Lifetime. I had a great experience from the sales cycle through installation and service. The salesperson was upfront and honest. The install team was professional, arrived promptly, and took time to mask off and protect the areas they were working on and cleaned up nicely on job completion. During the installation, one of the techs noticed that the sliding door was missing a wheel, promptly let us know and initiated...Read more
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Danielle Gladstone
Arturo and Dana installed our new shower and we love it! They kept us informed the entire project and handled small hiccups adequately. They even made sure of the smallest details we were aware of and okay with. We will do our other bathroom with them if we can get the same guys to do the work!
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Carolyn Kemp
Super happy with my service from Lifetime, and window installer Justin. He was nice, informative, and knowledgeable. Lifetime really does stand by their lifetime window guarantee.