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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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Jaycee Chinn
We had ten windows installed to replace 80-year old windows that had wood trim. Lifetime was able to make the style we wanted. Every step of the process was smooth and timely. I was particularly worried about the color of the wood and windows but Brandon W, the finishing manager, consulted and chose the perfect stain to complement our baseboards and old oak floors. Every team member did an excellent job. They were friendly, polite - and loved our dog!
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Christopher May
It was a bit difficult to get started. We decided to take their financing option but it didn't go through. No one told us that it didn't go through, we just waited and waited and didn't receive a call. So after chasing down the sales rep to tell him we still wanted the windows, we paid in full and got things rolling. Installation was quick and the installers were nice and kept our place clean. During the winter months the windows performed well. However, the windows do not block the heat f...Read more
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Bridget Sullivan
Lifetime Windows and Siding replaced the windows in our 1926 Park Hill home. They were professional and responsive. They matched the stain of the new windows to our walnut trim. When we had a miscommunication about the stain on the kitchen windows, and the company made it right and stood by their work. Our project manager was Luis Valles and the head of our staining team was Brandon Whitney. They were both professional.
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Geoff Gillum
I am a first responder and I had an appointment for them to come out for a free estimate. 1 hour past, past the schedule time that was given. I then gave this Company a call to find out whats going on. When I got to talk to the live person, they told me they tried to confirm my appointment 24 hours prior to the appointment. I told them that I'm a first responder and I was on shift that day. The rude person on the other line told me it's my fault for not confirming. When someone calls and does...Read more
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Justin Tayler
Thanks Isaac for supporting the zoo!