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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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June Cvelbar
Mike H came to my house this afternoon to work on my awning type window. I was having difficulty closing it and he analyzed the problem and thoroughly fixed it to his standards, which were much higher than mine! He was a perfectionist and I appreciate it. He made sure that I could open and close the window efficiently. (I'm a petite woman!) In addition, I asked him to look at 2 of my sliding patio doors because I was having a bit of difficulty with them. He found that a roller piece was missi...Read more
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Nathan Hayes
This is the second time we have used Lifetime Windows and Siding. We love the product (Infinity by Marvin) and the customer service from Justin and the rest of the team was phenomenal. Would highly recommend them for any of your window needs.
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Preston Peterson
I have been absolutely thrilled with the product and the service of Lifetime Windows. I purchased their product because the original windows in my home were letting in so much heat from the direct sunlight. I felt and immediate difference in the room temperatures where the windows were installed. Their product more than lived up to their claim. No more covering my windows with foam inserts to block the light and heat. I can now enjoy the view and let the natural sunlight in without over inf...Read more
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Brandon Sterling White
our service tech Justin was on time, polite, and went above and beyond by even helping to fill in some open screw hole caps.
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Cindy Ewertz
Great service by Mike H