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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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Melinda A
Just got my new windows installed last week. The entire process with Lifetime was smooth, quick, efficient, and easy from meeting with Dan (Sales), working with people internally for scheduling, payment, HOA items, misc. questions, etc. (Ashley, Sam, Blake, Connie, Rebecca, Stephanie), getting the final measure (Jamie), the amazing install (Frank and Alan), to Justin who was the Project Manager. Total care and respect of my home was taken in every aspect - from shoe removal or shoe guards used ... Read more
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Nick Hoskins
Probably the worst sales and customer service i have ever experienced. I was told by Julia that they "do not want to waste there time" doing a 4 window job for me that they quoted out in 2022. This girl was rude and unwilling to assist or find a solution. Her manger had to get involved because of the incompetence and offered to schedule a time to come back out. we are going with a different provider if you are looking for a good customer experience definitely go somewhere else because with Julia... Read more
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Amy Wright
Great job and great clean up
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Nicole Graham
Terrible customer service. Trying to buy additional parts for the windows we purchased a couple years ago. Called multiple times and left multiple messages and no one calls back. When we bought our windows their customer service was reasonable but disappointing to see how poor it has become, for the amount of money we paid I expected better.
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Patricia Vickland
I am sorry I need to give a 1. I installed multiple doors and sidelights, amounting to approximately 100K. My experience has been horrible. Hopefully the product will hold up. Over a 9 month period, I have dealt with no less than 5 super independents because they can't keep employees. And with each one, there is conflict, non-acceptance of the issues, and basically everything they can do to nickel and dime. I am thankful I have things in writing. The final french doors and sidelights were measur... Read more