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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Bob Gertie
Beware, these guys are VERY disorganized! I scheduled a bid for a new entry door while at a golf tournament the week prior. They never showed up to the appointment, so I emailed the company letting them know they no showed my appointment. Disappointing as we made arrangements for my wife and I to be home as well as spend a good amount of time looking at the options they mentioned when scheduling. Michael, their scheduling manager called, emailed and texted me about 15-minuites after the email... Read more
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Matt Hallinan
Really great experience. Went through the lengthy sales pitches with all the main window companies and ended up at Lifetime having visited the Pella showroom in Denver and being dismayed by the quality of the product. The Lifetime team are extremely helpful and the quality of work and attention to detail from their installation crew was a joy to see. They worked relentlessly in 100 degree heat to replace all of our windows and patio doors, and apart from a few minor issues with our old siding,... Read more
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Emma K
Unfortunately they ghost you after install and don't follow through with their end of the sale.
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Mike Reis
Lifetime team was extremely professional. We had an old tube turned into a walk-in shower. Dana and Max had the job done in 1 1/2 days while keeping a very clean workspace. They did a fantastic job cleaning up after the work was done. Shower looks great.
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Glenn Beeman
We had a bath tube and we wanted a shower and Dana And max did a outstanding job and and they were very professional