Replacement Windows
At Discount Windows & Siding, we offer top-quality replacement windows that improve comfort, efficiency, and curb appeal. With trusted brands and expert installation, we make upgrading your Denver home simple and affordable.
Coeur d’Alene Window Company: Precision Craftsmanship That Exceeds Expectations
Exceeding expectations is at the heart of everything Coeur d’Alene Window Company produces. Each window and door is engineered with meticulous attention to detail, using premium materials and advanced manufacturing methods to ensure long-term performance and beauty.
Coeur d’Alene formulates and fabricates its own vinyl components in controlled environments, maintaining exacting standards for quality and consistency. Their proprietary vinyl blend includes high-grade stabilizers and titanium dioxide for exceptional strength, color retention, and heat resistance. Every frame and sash is tested for durability, weather performance, and flawless fit.
The result? Windows and patio doors that are exceptionally durable, energy efficient, and visually refined. Whether you’re upgrading an existing home or starting a new construction project, Coeur d’Alene Window Company delivers products designed to perform beautifully for decades.

Simonton Windows
Custom-Designed with Your Home and Your Needs in Mind
From elegant design to everyday functionality, Simonton Windows are crafted to enhance the beauty, comfort, and performance of your home. Every window is custom-built to your specifications, ensuring a perfect fit and a look that complements your home’s architecture.
Simonton’s advanced manufacturing process prioritizes precision and consistency at every step. Each window is rigorously tested for air, water, and structural performance to meet or exceed the most demanding industry standards. The result is a product that performs beautifully in every season — keeping your home quieter, more comfortable, and more energy efficient.
With a variety of styles, frame colors, and hardware options, Simonton offers the flexibility to match any design vision. Their energy-efficient glass packages and insulated frames help reduce heat transfer, lowering energy costs while maintaining year-round comfort.
Backed by a Lifetime Limited Warranty, Simonton windows represent a commitment to craftsmanship, durability, and value that homeowners have trusted for generations. Whether you’re replacing existing windows or starting a new construction project, Simonton delivers quality that lasts and beauty that endures.

Vinyl Windows and Doors by Prime Window Systems
Engineered for Strength, Efficiency, and Long-Term Performance
At Prime Window Systems, excellence begins with innovation. Every vinyl window and door is built from proprietary materials formulated for superior durability, weather resistance, and energy performance. Produced in carefully controlled environments, Prime’s vinyl compounds are engineered to maintain color stability, structural integrity, and long-lasting beauty—even in Colorado’s demanding climate.
Each frame and sash is precisely extruded to exact specifications, ensuring consistent quality and a flawless finish. The vinyl material incorporates high-grade stabilizers and performance additives that enhance rigidity, reduce expansion, and prevent warping or cracking over time. Before leaving the factory, every component undergoes rigorous testing to guarantee it meets the highest standards of strength, insulation, and smooth operation.
The result is a collection of vinyl replacement windows and patio doors that are as reliable as they are beautiful. Designed for both remodel and new construction applications, Prime Window Systems products provide outstanding value, thermal efficiency, and everyday performance — delivering comfort, confidence, and lasting curb appeal for years to come.

Windows by Alside
Vinyl Replacement Windows That Combine Innovation, Efficiency, and Lasting Beauty
With over seven decades of continuous innovation, Alside has become a leader in crafting vinyl replacement windows that deliver exceptional beauty, reliable performance, and remarkable energy efficiency. Every window is engineered with precision to ensure effortless operation, long-lasting durability, and timeless curb appeal.
Alside’s advanced vinyl frames are designed for strength and thermal performance, resisting warping, cracking, and fading through years of changing weather. Each window features smooth-operating components and a refined aesthetic that enhances the look and comfort of your home—inside and out.
Because up to 80% of a window’s surface is glass, Alside places special emphasis on its insulating glass technology. Their ClimaTech® Low-E (low-emissivity) glass packages minimize heat transfer, helping your home stay cooler in the summer and warmer in the winter. This advanced glazing system not only improves comfort but also reduces energy loss, cutting utility costs year-round.
Available in multiple styles, colors, and configurations, Alside vinyl replacement windows are ideal for homeowners who want the perfect balance of performance and design flexibility. Whether for new construction or renovation, Alside delivers windows that perform beautifully and look stunning for decades.

Casement Windows
Traditionally the most elegant of all window products with the tightest weather seal and rugged durability, a casement window offers the best in strength and protection against outside elements.
At Discount Windows we offer all kinds of windows! Contact us today for a free estimate.

Replacing your windows will make a huge difference to the comfort of your home, making it look and feel brighter and more efficient. Not only are replacement windows beneficial for energy savings, but they also increase curb appeal and property value significantly. It is important to understand the various options available before you commit to a window installation company.
Replacement Windows Vary in Cost
Take the time to research prices, warranties, and materials used in replacement windows to ensure you get the best product for your needs. Discount Windows offers an experienced team of installers and superior customer service, so be sure to get a quote from them. With their help, you can find just the right windows that meet your functional and visual needs while staying within budget.