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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Adam Gardell
Lifetime windows did a great job tearing out our old, inefficient windows, and installing new ones. It was a quick process and they even helped me navigate through my HOA. The windows look incredible and it was a quick process overall. Windows were ordered, made, and installed within 4 weeks. Lifetime's project manager, Lonnie Vonfeldt was awesome. He came by the house to make sure everything was running smoothly. He caught a few errors made by the window manufacturer and got them ordered proac...Read more
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Al C
We used Lifetime Windows and Doors because they have quality products and with their promotions at this time they have the best price. We had Robert and Abel doing the install. They where prompt, courteous, and professional. I would definitely use their services again.
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Sue McLaughlin
I was extremely pleased with the service from Lifetime. They were courteous and professional from the sales person coming to my house for a quote, the measuring, to the installation. They took the time to make sure everything was done perfectly and to my satisfaction. Great company to work with.
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Jacob Martin
It was a pleasure to work with them. Great communication and made the process very easy! Highly recommend! Thanks Don for everything. I really appreciate all you did for us.
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Training Email
Terrible experience with communicating with customers also their siding faces very quickly and needs to be painted within 5 years. Chad is a salesman so you know he just wants that next sale so doesn’t get back to anyone but David I expected more from. This company is a joke meant to only line their pockets and not care about their customers. Anyone else would be better.