Top-Quality Windows, World-Class Service
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Turn to 1st Choice Windows and Siding to Install New Windows on Your Denver Home

Trying to find the best renovation company to replace the windows on your home in the Denver area can be overwhelming. Thankfully, by offering the finest products and service in the industry, 1st Choice Windows and Siding makes it easy to choose. For several years we've established ourselves as a trusted name among home improvement companies thanks to our:

  • Superior products - We install industry-leading replacement windows that will provide a fresh, new look for your home and unbeatable durability and energy efficiency.
  • Skilled installers - Courteous, punctual, and meticulous, our team of craftsmen will ensure your new windows are flawlessly installed so that they look and perform as intended long into the future.
  • Exceptional customer service - We are a family-owned, honest, and dependable business that takes pride in our work and treats every customer like family. From first contact to final inspection, you can expect us to go out of our way to provide an exceptional window replacement experience for you.
  • Unbeatable warranties - We will stand behind our work with a 10-year installation warranty, in addition to the manufacturer's warranty, to thoroughly protect your investment.
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Expect Quality Results With 1st Choice Windows and Siding

When it comes to home improvement projects, there are certain qualities that are absolutely vital for success: attention to detail, pride in workmanship, reliable customer service, and commitment to excellence. You'll find an abundance of each when you choose 1st Choice Windows and Siding, as well as:

  • Timeliness and constant communication
  • A risk-free estimate
  • Honest and reputable assistance from a company that has been in operation since 1995
  • Total professionalism from our technicians, who will work efficiently and keep work-zone clutter and debris to a minimum
  • Highly personalized and approachable service you can only receive from a family-owned company
  • The option to install windows in walls where there are no current openings, as we have our general contractor's license

For more information, and to get started on your project, contact 1st Choice Windows and Siding today!

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Beat the Heat! Ends August 31st, 2025

Upgrade your home this summer with 40% OFF all windows, siding, and doors — our biggest savings of the season!
AND Beat the Heat with a FREE energy-saving glass package upgrade!

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Brands We Build With

We install windows by industry-leading manufacturers like Anlin, Milgard, Weather Shield, and Simonton.

What Our Clients Are Saying
See what our clients have to say about working with us!
Steven H.

"The installers...did a GREAT job! The windows looks great, our house is much better insulated and secure, and we can finally open windows that were previously broken. I highly recommend this company, and we will be using them to finish the 3 remaining windows and the sliding glass door next year!"

Deb D.

"I reached out to 1st Choice Windows and had a call back right away from a very friendly associate named Helen. Within a couple of days Jay was at my house showing me quality window options with lots of features. I was very pleased with the bid that Jay presented and signed a contract right away! I can 't wait to do future business with these great people. Thanks Helen and Jay!."

Alyssa M.

"We had a really good experience working with this company from initial meeting to final walk through. We replaced over 50 windows in our home, so this was a big job and we are very pleased with choosing 1st Choice. The owner, Tom, was very knowledgeable and helped us select the best windows for our home within our budget. Our installer, Ryan, went above and beyond to make the finished product exactly what we wanted. Their customer service point of contact, Helen, is incredibly kind and ensures customers are taken care of. We would happily recommend this company!"

Contact Us Now: (720) 580-3000
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