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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Mike Ernst
We had an outstanding experience; beginning with low-pressure consultation through installation and follow-up adjustment. They worked with us and our budget to allow us to replace some major windows. We noticed the comfort improvements right away, and our energy report from Xcel Energy has moved our rating from good to excellent energy efficiency. Xcel actually lowered our equal monthly billing amount. Installers were courteous and fast, and kept the inside and out very tidy. When our budget all...Read more
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JENNIFER DONOHUE HULIN
I had an appointment for a quote. Stayed home all day and no one showed up. I called and they said there was an appointment last week don't you remember? No show-no-quote-no sale. What is it with these window companies?
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Donna C
I used this company on a few occasions. They expertly replaced my siding and responded quickly to some questions and concerns. So far, the siding looks dynamite and I am extremely happy. They also replaced my patio door with a gorgeous sliding glass door that is doing what it was promised to do - keep out the cold, heat and blazing sun. That, too, was replaced quickly and efficiently. Both times, clean up was perfect. The office staff is a joy to work with. I would definitely recommend Lifeti...Read more
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Scott Greenhalgh DDS
Jason did exactly what he said he would. Everything happened easily and on time. The installation was done expertly (and I'm a stickler for details). Preston managed the install and did a beautiful job. I would highly recommend them to you as well.
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Petra Bute
Lifetime did not only replace all our windows, they cut open walls to make windows bigger and added sliding doors and replaced all our doors with glass-doors. All was done in a timely matter and we got 40% more light into our house. The amount for their work was very reasonable. We would choose them again for any window needs. Very happy indeed with their help and service. Talk to Peter - the Swedish sales man - he knows what he is doing!