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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

3385 West Saratoga Avenue , Englewood, CO, US
  • Infinity by Marvin
  • Infinity by Marvin: Ebony
  • Windows
5401 East Van Buren Street UNIT 1008, Phoenix, AZ, US
  • Windows
8173 Briar Ridge Drive , Castle Pines, CO, US
  • Infinity by Marvin
  • Infinity by Marvin: White
  • Windows
12990 East Arkansas Drive , Aurora, CO, US
  • Infinity by Marvin
  • Infinity by Marvin: White
  • Windows
4716 Castle Circle , Broomfield, CO, US
  • Anlin Del Mar
  • Anlin Del Mar: White
  • Windows

Customer Testimonials

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Patricia Zirbo
Very happy with Lifetime! From Dough who initially came to help us figure out best type of windows for the ones we replaced, to Veronica who was always very communicative with us throughout the process and finally Diego and Diego who came to install the windows. Everyone was friendly, professional, and a pleasure to work with. We would highly recommend this company for your remodel needs.
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Patricia Zirbo
Very happy with Lifetime! From Dough who initially came to help us figure out best type of windows for the ones we replaced, to Veronica who was always very communicative with us throughout the process and finally Diego and Diego who came to install the windows. Everyone was friendly, professional, and a pleasure to work with. We would highly recommend this company for your remodel needs.
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Steven Hader
We had all windows replaced in our home. Michael, Marco and Marcos were amazing. They were polite and professional. The Stucco crew (names forgotten) were also very professional. They kept a very clean worksite and covered our floors and outdoor tiled areas as their work progressed. Thank-you Lifetime Windows.
Reviewer photo
Steven Hader
We had all windows replaced in our home. Michael, Marco and Marcos were amazing. They were polite and professional. The Stucco crew (names forgotten) were also very professional. They kept a very clean worksite and covered our floors and outdoor tiled areas as their work progressed. Thank-you Lifetime Windows.
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B L
I'll start by saying this review is of Lifetime, the company that sells and installs windows, not Marvin, the window manufacturer. The Marvin windows seem to be good. But replacement windows are only as good as the install, meaning the insulation and flashing around the window frame. This was the most stressful day! The crew came as scheduled and instantly got to work ripping out my old windows. One of the 5 crew spoke English and that was the one person I could speak with. They worked very fast... Read more