Business Details
40 Years
experience
Your Trusted Source for High-Performance Windows and Doors
Alpen High Performance Products has been pioneering climate-responsive design for over four decades. Founded in 1986, we specialize in manufacturing high-performance windows, doors, and architectural glass that combine energy efficiency, durability, and design flexibility. Our products are engineered with advanced materials like triple-pane and quad-pane glazing, fiberglass, and fiber-reinforced uPVC to deliver superior thermal performance and air resistance. As the first North American window manufacturer to achieve dual certification from PHIUS and PHI, we lead in Passive House standards and sustainable building solutions. Headquartered in Colorado, we serve residential and commercial clients nationwide through an extensive dealer network.Our commitment to innovation is demonstrated through projects ranging from net-zero homes to high-profile commercial buildings, including installations in extreme environments from Death Valley to the Arctic. We prioritize transparency, offering third-party certifications like ENERGY STAR and NFRC, while maintaining U.S.-based manufacturing to ensure quality control and shorter lead times. Our team collaborates with architects, builders, and homeowners to create custom solutions that meet rigorous energy codes and environmental goals. With a focus on reducing embodied carbon and enhancing indoor air quality, we contribute to a climate-resilient future through products that minimize energy consumption and environmental impact.
Services
Residential Windows
Commercial Doors
Retrofitting Solutions
Insulated Glass Units
Passive House Products
Details
- Year established: 1986
Highlights and features
- We offer over 40 years of expertise in climate-responsive window and door design.
- Our U.S.-based manufacturing ensures shorter lead times compared to imported products.
- We provide customization options for tinting, gas fills, and unique architectural requirements.
- Our products meet dual Passive House certifications from both PHIUS and PHI.
- We engineer solutions for extreme climates, proven in environments from deserts to Arctic regions.
Associations and certifications
- ENERGY STAR
- NFRC
- PHIUS
- PHI
What people say
Energy-efficient windows
Customization options
Shorter lead times
Durable materials
Professional service
Services
Residential Windows
Our residential windows feature triple-pane and quad-pane glazing with fiberglass or fiber-reinforced uPVC frames. These materials provide exceptional thermal efficiency, reducing energy costs while maintaining structural integrity in extreme climates. Customizable options include various styles, colors, and hardware configurations to match architectural visions. The advanced ThinGlass technology and gas retention systems ensure long-term performance and UV protection.
Commercial Doors
Commercial door solutions combine durability with energy efficiency through reinforced fiberglass frames and multi-pane glazing. Available in configurations like sliding and swing doors, they offer high glass-to-frame ratios for natural light optimization. Features include multi-point locking systems for security and sound attenuation up to STC 39, creating quiet indoor environments while meeting commercial building codes.
Retrofitting Solutions
Retrofitting services upgrade existing buildings with high-performance windows and doors to improve energy efficiency. Our solutions address aging commercial structures, offering cost-effective improvements that reduce heating and cooling costs. The process includes custom measurements and installation techniques that minimize disruption while achieving modern energy standards.
Insulated Glass Units
Insulated glass units (IGUs) incorporate advanced low-e coatings and gas fills between panes to maximize thermal performance. Designed for both residential and commercial applications, these units meet rigorous energy standards while providing UV protection and noise reduction. They are compatible with various frame materials and architectural styles.
Passive House Products
Passive House-certified windows and doors meet the highest energy efficiency standards through ultra-low U-values and airtight construction. These products enable buildings to achieve PHIUS+ and PHI certifications by minimizing heat loss and optimizing solar gain. They are engineered for climate resilience while maintaining aesthetic flexibility for modern designs.
Questions
What makes Alpen windows energy efficient?
Our windows use triple/quad-pane glazing, low-e coatings, and thermally optimized frames to minimize heat transfer and air leakage.
Are Alpen products certified for Passive House construction?
Yes, we were the first North American manufacturer to achieve dual certification from PHIUS and PHI for Passive House standards.
Can I customize window sizes and colors?
We offer custom sizes, shapes, and multiple color options including black, white, and bronze finishes.
How do Alpen windows perform in extreme climates?
Products are tested in environments from Death Valley to the Arctic, maintaining performance in extreme temperatures.
What warranty do you provide?
Residential products include a lifetime warranty while you own your home; commercial products have 20-year coverage.
Are your products available nationwide?
We serve all U.S. states through our dealer network and direct distribution channels.
