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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Lindsay Kenison
Just had Darian out to my home to fix the door Lifetime installed. Nothing wrong with install, just an old house that adjusted itself after the installation. Darian was personable, friendly and fixed the problem. He even handled the dog well.
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Chad Coon
Richard was very helpful with his intake call. After explaining I needed an exterior patio door replaced, he assured me this fell under their purview and that he'd pass me along to a rep to get a price quote. Unfortunately, the sales rep I was passed to, Shon, insisted on trying to sell me a $3,000 solution to replacing a sliding patio door. I don't recommend wasting your time as their sales reps don't listen or seek to understand and seem to be more interested in making a quick buck.
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Lauren “Lo” Schaeffer
THESE PEOPLE ARE EXREMELY RUDE!!!!! I HAVE NEVER BEEN TREATED THE WAY RICHARD TREATED ME IN MY ENTIRE LIFE. First they no-showed our consultation appointment. No show No call. Then he proceeds to call me weeks later and accused me of lying saying he spoke with my husband, and that my husband told him my mother was on her death bed. WELL NO THAT IS NOT TRUE because he did not have my husbands phone numbers, and MY MOTHER IS QUITE HEALTHY THANKS! ABSOLUTLY AM IN AWE by how I was just treated, and ...Read more
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Jon Marlan
Had some cracking issues around my windows (drywall issues). Darian and Robbie came out and repaired the drywall. They did a great job. Appreciate them coming out and fixing this! (I purchased windows from Lifetime 2 1/2 years ago.)
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Annie Foppe
Working with lifetime windows and siding was a fabulous experience from start to finish. They were prompt, timely, the windows are INCREDIBLE and every employee we worked with was friendly and polite! We are so glad we chose Lifetime!!