Take a look at our past work!

Lifetime Windows & Siding

Learn about us:

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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Mari S
BEWARE! The person who roped us into having them come out was NOT honest with us. He told us we'd receive a 40% discount. When RUDE rep came out he said that's only if we sign the contract right then and there. Also got very defensive when we questioned why we were told the average price of this service ranges $14,000 - 20,000 BEFORE the discount. Basically became aggressive, insulted us and literally stormed out of our home. Admitted that we were mislead because otherwise, "We'd never g...Read more
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Chris CMU
I have been called twice by them (I inquired about windows a couple years ago) and twice I have told them I already installed new windows with another company. I don't mind that as much as I mind the people going door to door in my sub bothering us every year. We are a NO Solicitation sub, there are signs out front. This is the age of the internet, if we WANT your services we can find you. Please stop begging for customers.
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Dido UK
We had great service from Justin Freeman of Lifetime Windows and Siding. He was very efficient, professional and polite. He completed the work quickly and communicated well. It was really nice to meet someone who is very happy in their profession.
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Linda G
As always the staff at Lifetime were excellent. From the salesman, measurer, scheduler and install team. Thanks. I love my new door.
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Dustin McGee
Very happy with Lifetime windows. I needed to replace some 80+ year old windows and Keron Singh was the man! Didn't oversell me, walked me through all the options and I ultimately decided on the Infinity by Marvin windows. From measuring to installation, the entire Lifetime crew were great to work with. Friendly, fast and efficient. My new windows are beautiful and very energy efficient. I'm a happy guy! Highly recommend!