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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Steve Karmgard
Everyone from the salesman, scheduling and the installers were fantastic. The installers Eric and Abel paid great attention to detail and communicated every step of the process. . I feel you cannot beat the quality of the product and professionalism of the staff.
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April Murren
My favorite part is everyone who has gotten windows I know , has had someone come and over pitch them for hours . We have two young kids and not a lot of time , dude walked in and out within 10 mins with a great quote , zero pressure to order and said call me when your other estimates are at least twice the price ... Haha and they were. Windows arrived exactly in the time promised , guys did a great quick job installing . Def will use them again 👍
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Ron Byers
The salesman explained things well and worked with us to get what we wanted. The workman were on time, were efficient, and we were satisfied with the outcome.
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Cheryl Costner
Dee Baumgardner is great! We had windows, Infinity by Marvin, by Lifetime Windows installed in our home 5 years ago. At that time, we only had the front of our house done. We wanted to have the rest of our house done. It took us 5 years, but we knew we wanted to use Lifetime again because of the incredible service we received in the past. Well...we contacted Dee Baumgardner once again and he did not disappoint! We had awesome service from start to finish again! Each step of the way Lifetime l... Read more
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Allen Erickson
Great company to work with! Installers did a good job. However their caulking wasn’t that great, found some on the floor and countertops even though these areas were covered. They should be sure when dropping caulk they clean it up right away. Also some of the caulking is thick around the edges of the windows, shouldn’t be as it shows more and is unsightly.