Call us at (720)508-4385

Millennium Windows & Siding

Vinyl Windows

Work directly with the owners

Why pay a salesperson's high commission? Our customers save on average 20% below their other bids.

Top-Rated Vinyl Replacement Windows by Simonton

For more than 70 years, Simonton Windows has manufactured innovative vinyl windows that are a great investment for homeowners. These beautiful replacement windows will transform the look of your home while offering the highest degree of energy efficiency and durability.

By offering the complete line of Simonton windows and patio doors, Millennium Windows & Siding can deliver vinyl replacement windows for any budget and style preference. Simonton Windows have the features and benefits consumers look for most often:

  • Energy Star-rated, regionally specific glass packages designed for efficiency in our Rocky Mountain climate. There are advanced glass options that provide greater sound-dampening, impact-resistance, insulation, UV filtering, and security.
  • A variety of classic and contemporary frames designed to complement any home and offer long-lasting durability and low-maintenance. Select frames in a range of both interior and exterior colors and styles to integrate with your home’s appearance.

When installed by Millennium Windows & Siding, Simonton vinyl windows are custom created for your home and preferences, and are and backed by an industry-leading warranty.

vinyl replacement windows
vinyl window
vinyl windows

Request a Quote for Your Home

At Millennium Windows & Siding, you work directly with the owner eliminating the salesman’s high commission.

Contact Millennium Windows & Siding, and we will visit your home to provide a customized quote on the windows you choose.

Our products are backed by our true 100% lifetime warranty* with no trip fee and no labor fee!

* Includes window frame, operators, seal and glass. Call (720)508-4385 for details.

An investment in new windows or siding from Millennium Windows & Siding will increase the value of your home, because our warranty transfers to new the homeowners when you sell.

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