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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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Karen Shilgalis
The folks at LifeTime Windows did a wonderful job ordering, measuring and installing five replacement Marvin Infinity windows. Max got in touch with me right away and came out on a Saturday to measure and quote the job. Mike did the actual measuring and they were all a perfect fit, so Sean and Cory’s job of installing went smoothly. JB, the project manager came while they were installing and answered all my questions about removing the screens. Brandon’s staining crew came three weeks later. C... Read more
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Andrew Dorsch
Can’t say enough good things about the installation crew. Victor and Max did an amazing job residing our house. They pay attention to detail and even sent back a few pieces that didn’t color match perfectly. I will definitely be requesting them again when I decide to side the garage. Our project managerJason was also great at communicating every step and helped us save some money from the original bid. The team made the experience easy and have earned repeat business.
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Mackenzie Haugh
Lifetime windows did an amazing job. My estimate was reasonable, the wait time after ordering was short and they installed in one day. Any little issues that arose, were handled swiftly and fairly by them. Highly recommend the company and the product.
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Bobby Lombardi
It’s not easy for me to write a review and so I rarely ever do one. Lifetime Windows and Siding is going to be the exception. After recent hail storms and a new roof, my wife and I finally, after 35 years in the same house, decided to go a little further and add windows, siding and even a new door. Surprisingly at that very same time a young man from LW&S, who just happened to be in the neighborhood going door-to-door, stopped by our house. I set up an appointment to have someone come by and ... Read more
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AJ Hashman
Called to get an estimate on 2 replacement windows they set up a time to come out then called me back stating the windows would be around 3000 each and if i wasn't ready to pay that out of pocket they were not coming out to even give an estimate. Very rude and 3x the price of their competition. Kinda glad they didn't waste my time. Good luck with that business model I'll spend my money elsewhere.