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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Tom Flanagan
If only I could give Lifetime Windows and Siding a 6th star! Where to start... First of all, to have such an enjoyable experience buying new James Hardie Siding and Marvin Infinity Fiberglass windows was an experience I didn't expect to have! I'm not sure what Lifetime is paying David Thomas but I know it's not enough. To have a sales manager pay such careful attention to my needs and wants is something I haven't experienced in the remodeling industry. As a business owner for many years now, I k... Read more
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Gina
The team at Lifetime is great to work with. My interaction with everyone has been a pleasure!
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Jessica O'Connor
My experience with Lifetime could not have been a better experience! Right from the very beginning! The crew that was sent to our home was amazing and very professional. Such amazing work for an amazing price. Will use them again and recommended them to anyone in the market.
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steve lee
The service of this company was amazing and blew my expectations out of the water! I would highly recommend them to anyone in the Denver area! The only window company I will ever use from now on!!!!
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Adam Baker
We purchased Energy Star Rated windows through Lifetime over 1 year ago, and we have seen a huge difference in our Excel bill. Not to mention we can no longer hear our loud neighbors! Very professional team and great product couldn't ask for more.