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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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Dr. Rachel Liepman
We had been looking to replace our windows in our home and quotes from other places were so outrageous, that we kept putting off the project. We wanted a quality product at a fair price. Our close friends recommended Lifetime and when we heard they were a local company with a lifetime warranty, we were stoked to get a quote. They came quickly for our estimate, were honest and open about the product and offered no interest financing options for 2 years. We signed up right away and we are happy wi...Read more
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Bacon Janet
I had window installed by Lifetime Windows and siding. The windows were installed beautifully, I am really happy with the product. Brandon and Kate followed up with painting detail to complete the job. The paint job was meticulous. They put everything back as it was, rehanging blinds and curtains. This team is such a wonderful and pleasant team to work with. Extremely professional, polite, considerate, and trustworthy.
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Peter McMillin
Kate and Brandon provided highest levels of service, quality and professionalism. I give them highest marks.
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JeanAnn Hanson
We had Lifetime Windows and Siding install 31 Windows and 2 Patio Doors in September. We are so pleased with the windows, seeing a significant improvement in temperature consistency and efficiency within our home. The Installation Crew managed and overseen by Jessie and JB were amazing. The entire crew was professional, courteous, respectful of our home and the quality of the work was first class. Shon Romines was the Sales Person we worked with. He was extremely helpful. He was attentive to...Read more
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Gloria R Amaya
Lifetime Windows sales and install team are great to work with! Robert, AJ and Bubba were very professional when they came to complete our 6 window install. They worked fast, efficiently, and were very clean throughout the process! I would definitely recommend Lifetime for your window and door updates! Make sure they send you Robert, AJ and Bubba for the install!!