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

1816 Mallard Drive , Louisville, CO, US
  • Anlin: White
931 West Alder Street , Louisville, CO, US
  • Infinity by Marvin: Bronze
  • James Hardie Siding: Primed
4517 Apple Way , Boulder, CO, US
  • Infinity by Marvin: Everwood
  • James Hardie Siding: Arctic White
  • James Hardie Siding: Boothbay Blue
4517 Apple Way , Boulder, CO, US
  • Infinity by Marvin: Everwood
  • James Hardie Siding: Arctic White
  • James Hardie Siding: Boothbay Blue
18498 East Columbia Circle , Aurora, CO, US
  • Anlin: White

Customer Testimonials

Reviewer photo
Michelle Highsmith
When shopping around this company stuck out because they didn’t come off as thirsty for a sale. One company stayed for almost 4 hours not wanting to leave until we signed. Lifetime came gave us the information we needed and gave us elbow room to breathe and think before following up. Their entire team is phenomenal. Frank was throughly informative when he came to assess and measure the bathroom. Todd and Max were extremely pleasant during the installation process. Sensitive to my elderly mother’...Read more
Reviewer photo
janet harding
Last week Michael & Marcos installed 5 new windows in my home. They were very personable, cleaned as they went & afterward, & didn't seem to mind that I asked them tons of questions! Very efficient & obviously knew what they were doing! I would highly recommend them & Lifetime windows!
Reviewer photo
cyrus sirang
I needed to redo my shower and used Angie to receive three in-person quotes, ultimately selecting Lifetime's offer. They weren't the cheapest, but they were the most professional. The installers, Moe and Tyler, arrived promptly, were considerate, and got the job done efficiently, exceeding expectations. I've had the shower nearly a couple weeks now and couldn't be happier. Thank you for the job well done. -Cyrus Sirang
Reviewer photo
David Burnell
Just had new windows and a patio door replaced. What a great improvement over our original single pane windows. The area with the new windows is NOTICEABLY cooler and we can now leave the window coverings off to enjoy the views to our backyard. Windows and door are beautiful and much more functionable than our old ones. The installation went smoothly and on time. Our installers, Luis and Adam were both courteous, helpful and meticulous during the installation and cleanup. Couldn't be more pleas...Read more
Reviewer photo
William Dirkes
We had 15 windows replaced (2 were lengthened) and a new large picture window installed. The process and service has been great. Josh and his team got it all done in two days. They were tidy and efficient. There were a few minor service issues but Michael was very responsive and took care of a few minor issues we didn't even see. The whole team was very good at communicating and took care of everything from start to finish.