About Us

In 2003, Leo founded Denver’s top window replacement company, Colorado Window Source Denver, on the promise of excellent customer service, top-quality products, and quick and easy installation. At Colorado Window Source Denver, we believe in the strength of family and community.

Over the last 18 years of service, we’ve stayed committed to our original promise, and our Denver window replacement company has grown and expanded year after year. With each expansion, we’ve been able to increase our service area, earning us a spot as one of the most trusted window and door replacement companies in Denver.

At Colorado Window Source, we know that clients are wary of getting burned by unprofessional contractors, and that is why we developed our signature low pressure consultative approach to offering customers what they want and not what we want to sell them. Many other companies use a high pressure, one size fits all sales approach, even going so far as to falsely inflate their pricing and then offer a large “discount”. We take pride in our proven track record of superior service and our long list of credentials, but don’t just take our word for it—check out our 5 Star rating on GuildQuality.com!

Our acclaim does not stop there. For over five years, we’ve been proud to be among the Gold Star members of Denver’s Better Business Bureau.

Our Services

- Window Replacement

- Vinyl Replacement Windows

- Bay Windows and Bow Windows

- Casement Windows

- Double–Hung Windows

- Blinds

- Hunter Douglas Blinds

- Commercial products

Window Replacement

For over 18 years, Colorado Window Source has been a proud window replacement company to both residential and commercial properties in Aurora and Denver offering them top-notch services. From basement windows to bathroom windows and every room in between, we provide our customers with the best products for their budget.

Vinyl replacement windows are among the best possible options for Denver area homeowners. When you choose a custom window replacement from Colorado Window Source, you are sure to save on your utility bills for years to come and benefit from vinyl’s worry-free and maintenance-free longevity.

At Colorado Window Source, we pride ourselves on providing the widest range of options from trusted industry leaders. Because of our ongoing commitment to our in-house guarantees—Tru-Choice, Tru-Price, and Tru-Fit, backed by our lifetime Tru-Warranty—we will ensure that your home improvement project has the highest quality results with a price you’re sure to love.

Vinyl Replacement Windows

At Colorado Window Source, we specialize in providing our customers with the highest quality vinyl replacement windows in the Denver area. Windows are not one-size-fits-all, and it’s important to make the right choice for your home and your needs.

Our talented team of product experts will help you choose the best products for your window replacement project such as bay windows and bow windows. Like all our products and services, our vinyl windows are backed by our in-house Tru-Choice, Tru-Price, and Tru-Fit guarantees.

We will always provide you with the most attractive and most affordable option. On top of that, our Tru-Fit guarantees that all of our window replacements will be expertly fitted to your home’s exact specifications — Colorado Window Source even offers retrofit vinyl windows in Denver.

After installation is complete, our Tru-Warranty protects your window replacement investment for a lifetime. We will return to the site to check up on your window replacement three months, six months, and a year after installation to ensure that everything is in tip-top shape.

Bay Windows and Bow Windows

At Colorado Window Source, we offer all types of windows, including bay windows and bow windows, casement windows and vinyl windows. Working closely with industry-leading brands, Sunrise Windows, Anlin Windows, and JLED-WEN Wood Windows, our product experts will recommend the best brands and styles for your next home improvement project.

All our services and installations come complete with our Tru-Price, Tru-Choice, and Tru-Fit guarantees so that you can remain worry-free throughout all parts of the home improvement process. Not only that, but our Tru-Warranty protects all of our products for a lifetime—even after installation is complete.

One of the most transformative projects you can embark on as a homeowner is the installation of a bay window or bow window. Adding incredible visual intrigue, curb appeal, and a welcome wash of natural light, bay windows and bow windows can take any home to new heights.

Casement Windows

When it comes to finding the right option for your casement windows in Denver or sliding windows replacement needs, Colorado Window Source is proud to offer a wealth of information and guidance on the path to home improvement on top of high-quality products and reliable installation services.

Backed by our Tru-Choice, Tru-Price, and Tru-Fit guarantees, our product experts will earn your business and your trust by keeping our promise to find you the best fitting windows at the best price without any sacrifice in color, style, or curb appeal.

When looking at all the available sliding, single- and double-hung casement windows options in Denver, it’s important to select an option with a fully-reinforced frame. Though all our products and installations are protected by our lifetime Tru-Warranty, it’s important to minimize any need for repairs and reduce the possibility of failure in the future by selecting a high-quality option.

At Colorado Window Source, our product experts will help you make the best selection for your home. Call us today at 720-727-6031 to schedule your free home estimate or request a free Quick Quote—we’ll get back to you in 30 minutes or less and discuss all your casement windows needs in Denver.

Double–Hung Windows

Whether you are building your dream home or improving your existing home, double-hung windows in Denver are an excellent option. Known for their classic style, they are among the most common window types seen in Denver homes.

They feature two window panes—generally referred to as sashes in the window business—operating independently of the other. For this reason, double-hung windows may also be called dual-pane windows. For homeowners with children or small pets, they are a particularly attractive and practical option as the upper sash can open without leaving room for children or pets to escape.

At Colorado Window Source, we offer a massive selection of double-hung windows in various brands, sizes, colors, and more. Our product experts will use our in-house Tru-Price, Tru-Choice, and Tru-Fit guarantees to ensure you receive the best deal, the best styles, and the best fit for your window replacement.

Hunter Douglas Blinds

Versatile Silhouette® window blinds suspend fabric vanes between two sheer fabric facings and offer a wide selection of elegant fabrics and optional features. The suspended vanes tilt with precision, giving you total light control and privacy. When fully raised, Hunter Douglas Silhouette window shadings completely disappear into the head rail for an unobstructed view.

Decisions, decisions. We can make the perfect window fashion, but only you can choose the perfect color. And Silhouette window shadings offer a variety of soft hues; even the head rail is color coordinated.

When fully raised, your window blinds are concealed behind them, so you can make the most of your outside views.

The Alustra® Collection of Silhouette® shadings are beautifully crafted from an exclusive selection of textured front sheers, metallic accented vanes and hardware finishes offering stylish innovations to elevate your home. The Hunters Douglas commercial roller shades can also be used on commercial windows and doors

For wide windows and sliding doors, our Luminette® Privacy blinds come in an array of sheer and drapery-like fabrics for unlimited light-control and privacy options.

Our Pirouette® shadings feature soft fabric vanes attached to a sheer backing that appear to be floating, drawing natural light into your room. When closed, they look just like a contemporary shade.

Contact Colorado Window Source Denver for more information about the best blinds in Denver options available.

Commercial Windows, Doors, Siding

At Colorado Window Source Denver, we have worked with owners, property managers, and HOA’s to make their commercial windows and doors projects a reality. Colorado Window Source has worked in schools, churches and office buildings. We have helped coordinate condo owners and their HOA’s on multi condo unit window replacements. We have extensive experience working on projects for the state of Colorado and other government agencies.

Whether your project needs custom wood windows, or simple white vinyl replacement windows, we can help. Given the improvements that replacement windows make in a building this is a project that many owners want to see get accomplished.

Replacement windows are a great way to improve the looks of any building and they are also one of the quickest and easiest things that can dramatically improve the energy efficiency of a building.

If you are interested in playing a role in preserving our environment and natural resources, replacement windows are a great step to doing your part in the “green movement.”

Replacement windows make good business investment. Tenants are happier and owners often see improved cash flow from rentals with accelerating returns over time. Tenants are typically willing to pay higher rents when they are more comfortable and see lower utility bills. All of these fantastic benefits lead to reduced turnover for you.