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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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Char Curry
I had all my dated windows replaced by Lifetime windows. I choose to go with the Marvin brand windows. They look great! The installation team was very professional, they did good job and left a clean job site. I am very pleased. I give Lifetime a ‘nice work’ from the beginning when I met the sales person through the whole cycle where everyone was professional and customer oriented. Thanks Lifetime for your help and an excellent customer experience.
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Jacob Jenkot
I had an insurance claim for a new roof. Mr. Richard D. came out, looked at my roof and gave me a quote. He explained the process and my options. I was recommended this company by a friend and I am glad I called. I felt very comfortable with this company, and at no point did I feel like they were trying to take advantage of me. I would use them again, and I would Rex come to them to a friend
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Jessica Sysou
Richard was great! He always responded quickly. He answered all our questions and addressed any concerns we had through out the project. He and the team took care of all the little details. It's probably the least stressful home improvement project we've done!
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Peter Schramm
Being in sales myself, I really appreciate a straightforward salesman. My salesman Dan was a true professional. He asked us the right questions and didn’t try to over sell us. Once we placed the order we were kept informed the entire time right up to scheduling the install. The installation went great, they were fast, clean, and very courteous. Buying new windows for your house is a very daunting task, but lifetime and Dan and his crew made it very pleasurable. Plus our house seems so much more ...Read more
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Aileen Sanders
Lifetime responded back to me right after we experienced a tornado. Woody in particular was most helpful! He came over to give us an estimate even though he had flooding at his own house! Several other companies didn’t even return my call! We got the windows faster than we expected and are very happy with them!