An Experienced Window Installation Company Serving Homeowners in Denver, CO

When you need to have a window installation completed at your home in the Denver, Colorado, area, there’s no better company to turn to than 1st Choice Windows & Siding. Window installations are at the core of our business—in fact, they’re even part of our company’s name. We boast decades of experience as the area’s leading window company, as we’ve been installing replacement windows for homeowners like you since 1995. Now, we’re ready to use our experience for your benefit.

About Our Replacement Windows

At 1st Choice Windows & Siding, we are committed to meeting the diverse needs of all those we serve. That’s why we offer a variety of different high-quality replacement windows. No matter your aesthetic or functional needs, we are sure to have windows that will check all your boxes. You can choose vinyl, fiberglass, or wood windows for your home, all of which are sources from trusted industry leaders to ensure they stand the test of time.

In addition to material, you can also select the perfect window style for every room in your house. Our expansive selection includes all the popular types of windows, such as:

  • Double-hung
  • Awning
  • Casement
  • Bay
  • Bow
  • Garden
  • Sliding
  • Picture
  • Geometric

Get Started

Are you ready to begin the process of enhancing your Denver, CO, home with a window installation? If so, contact 1st Choice Windows & Siding by calling (720) 580-3000 today to speak with a member of our team. We would be happy to schedule your free consultation and can answer any questions you have in the meantime.

“Window replacement was for our elderly mother and the professionalism of the entire 1st Choice team, greatly appreciated by the family - we did not have to worry that mom was being sold a 'bag of goods.' Love the new windows! Noise reduction, energy efficiency, look, all just great!”

Jane W
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“Window replacement was for our elderly mother and the professionalism of the entire 1st Choice team, greatly appreciated by the family - we did not have to worry that mom was being sold a 'bag of goods.' Love the new windows! Noise reduction, energy efficiency, look, all just great!”

- Jane W

“I could not believe how fast they got the job done and how well done it was! They obviously were very careful about every detail. The house looks fantastic and everyone I talked to at the company was great to work with. The guy who did the inspection for the people who bought our house even asked us who did the siding because they did such a great job!”

- Abby C

“Chris was an absolute gem to work with and the window suggestions were perfect. The home was built in 1962 and had all of the old steel frame windows which were losing energy rapidly. We noticed an immediate change in the environment inside the house and the outside looks fantastic. Great installers.”

- Carol S
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