Business Details
42 Years
experience
Your Trusted Source for Energy-Efficient Windows & Siding in Denver
Founded in 1984, Discount Windows has established itself as a trusted leader in energy-efficient window, door, and siding solutions for Denver and the Rocky Mountain Region. As a family-owned and operated business, we prioritize quality, affordability, and exceptional customer service, offering factory-direct pricing without compromising on product integrity or installation expertise. Our team brings over four decades of industry experience, specializing in custom window and door replacements, siding installations, and turnkey home improvement projects tailored to Colorado's unique climate challenges.We pride ourselves on transparent practices, including no-pressure sales, free written estimates, and a commitment to honoring product warranties regardless of installation method. With an A+ rating from the Denver/Boulder BBB and a track record of serving over 100,000 satisfied customers, we combine deep local knowledge with a dedication to innovation, ensuring every project meets the highest standards of performance, durability, and aesthetic appeal.
Services
Window Replacement
Siding Installation
Entry Doors
Patio Doors
Skylights
Storm Doors
Custom Window Ordering
Turnkey Installation
Energy-Efficient Windows
Siding Replacement
Details
- Year established: 1984
Highlights and features
- 40+ years of experience serving Denver's home improvement needs
- A+ rating with the Denver/Boulder Better Business Bureau
- Free written estimates with no pressure to buy
- Factory-direct pricing on all windows, doors, and siding
- Expert installation by trained professionals with 50+ years of combined experience
Associations and certifications
- Better Business Bureau (BBB)
What people say
Energy savings
Professional installation
Competitive pricing
Knowledgeable staff
Improved home comfort
Services
Window Replacement
Upgrade to energy-efficient windows that reduce utility bills and improve home comfort. Our selection includes double/triple-pane glass, Low-E coatings, and durable vinyl, wood, or fiberglass frames. Custom sizes and styles like casement, double-hung, and bay windows ensure a perfect fit for any home. Expert installation guarantees optimal performance and longevity.
Siding Installation
Enhance curb appeal and energy efficiency with premium vinyl, steel, or fiber cement siding. Our products resist Colorado's harsh weather while reducing maintenance needs. Insulated options improve thermal performance, and our team ensures seamless installation for lasting durability and aesthetic value.
Entry Doors
Install energy-efficient fiberglass, steel, or wood entry doors that boost security and insulation. Choose from customizable designs with decorative glass, advanced locking systems, and weatherstripping. Our doors combine timeless style with modern performance to increase home value and comfort.
Patio Doors
Upgrade to energy-efficient patio doors in 5', 6', 8', or 9' widths, with customizable sizes available. Our options include durable materials and thermal-efficient glass to reduce energy loss while maximizing natural light and outdoor access.
Skylights
VELUX skylights provide natural light and ventilation with leak-proof installation. Choose from fixed, venting, or solar-powered models with blinds and accessories. Our team ensures proper sealing and integration with your roof for long-term performance.
Questions
What types of windows do you offer?
We offer vinyl, wood, clad, and aluminum windows including double-hung, casement, awning, and specialty styles like bay and garden windows.
Do you provide installation services?
Yes, we offer expert turnkey installation with a full warranty on both products and workmanship.
Can I get a free estimate?
Yes, we provide free in-home consultations and written estimates with no pressure to buy.
Are your windows energy-efficient?
All our windows feature energy-saving technologies like Low-E glass, argon gas fills, and insulated frames to reduce utility bills.
Do you sell siding products?
Yes, we carry Alside vinyl and steel siding in various colors and styles for durable, low-maintenance exterior upgrades.
What financing options are available?
We offer flexible financing plans to help homeowners upgrade windows and siding affordably.
