Transforming Indoor Spaces

Residential Windows and Doors

Invest in Your Home’s Future

At Alpen, we recognize that your home is a significant financial investment and a statement of your values. With over 40 years of designing and building energy-efficient windows and doors, we partner with you to build your sustainable, high-performance home. From consultation to when you install your windows, we're dedicated to delivering exceptional performance and design.

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Products

Why Choose Alpen?

Long-Lasting Durability

Whether it’s new build windows or residential doors, our products are built to last, featuring high-strength, fiberglass and fiber-reinforced uPVC frames that provide structural stability and longevity beyond traditional materials. The innovative use of durable composites and proprietary technologies ensures that our products are virtually maintenance-free, with enhanced thermal performance and excellent resistance to fading and weathering in even the harshest climates.

Superior Water and Air Resistance

Engineered to withstand extreme weather conditions, our house windows and doors offer industry leading water and air infiltration resistance. Comprehensive sealing and advanced design create a formidable barrier against the elements, ensuring optimal protection for your home.

Architectural
Freedom

Alpen windows and doors are custom-manufactured to meet your specific design needs. We’re able to build larger windows without sacrificing quality or performance by using ultra-durable, lightweight materials. Offering a range of shapes, sizes, colors, and finishes, our products provide the architectural freedom to realize your vision without compromise, enhancing the beauty and functionality of your living spaces.

Enhanced Peace and Quiet

Experience tranquility and reduce external noise with our superior acoustic insulation. Our cutting-edge window technology significantly diminishes sound transmission, creating a serene and peaceful indoor environment.

Healthy and Safe Living Spaces

We prioritize your health and safety by minimizing the risk of condensation and mold growth through our expertly engineered windows and doors. Our products meet the highest standards for indoor air quality and environmental safety, contributing to healthier living spaces.

Future-Proof Your Home

Invest in the future with Alpen’s technologically advanced windows and doors, designed to meet and exceed tomorrow’s building standards. Our energy-efficient designs allow for significant savings on heating and cooling costs and offer flexibility for future HVAC upgrades, minimizing your carbon footprint and enhancing your home’s value.

Built for All Climates and Conditions

Tested in the most demanding environments—from the heat of the desert to the cold of the Arctic—our products are proven to perform. Whether installed in iconic skyscrapers or residential homes, Alpen windows and doors stand up to any climate, ensuring durability and performance wherever you live.

Sustainability
Focused

Our commitment to sustainability is reflected in our choice of materials and manufacturing processes. Alpen products are designed with the environment in mind, featuring materials like eco-friendly fiberglass that has low embodied carbon while enhancing energy efficiency.

Affordability without Compromise

We believe that high performance should not come with a high price tag. Alpen is dedicated to providing exceptional value, making our premium windows and doors accessible to a wider audience and contributing to a greener, more sustainable world.

Certified for Passive House

Alpen was the first North American window manufacturer to achieve dual certification from both PHIUS and PHI. We specialize in high-performance building products, with a focus on energy-efficient windows and doors. Our Passive House-certified products help architects, general contractors, and developers meet or exceed modern energy codes and build climate-responsive buildings.

Unparalleled Performance and Comfort

At Alpen, we set the bar for thermal efficiency with industry-leading performance ratings, far surpassing Energy Star standards and meeting the most rigorous Passive House requirements. Our residential windows and doors feature advanced, lightweight, high-performance triple and quad pane glazing that effectively blocks summer heat, retains winter warmth, and maximizes natural daylight. Enjoy unparalleled comfort in every room of your new home or after a window replacement project, throughout every season.

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Fargo house

Wildewood

Sunflower Sanctuary

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How We Work Together

Personalized Consultation and Expert Guidance

Understanding that every homeowner's needs are unique, we start by listening to your preferences, sustainability goals, and lifestyle needs. Our team recommends window and door solutions that enhance energy efficiency and functionality while complementing the design of your home. Our product selection offers a range of styles, materials, colors, and finishes, all made-in-the-USA.

Maximizing Comfort
and Efficiency

We understand that effective solutions address both form and function. Our design experts are equipped to offer insights that maximize natural light, improve ventilation, and frame your outdoor views, ensuring that your home’s interior is comfortable and aesthetically pleasing.

Transparent Communication and Detailed Project Management

We believe in the power of communication, keeping you informed and engaged throughout the process. Our window solution specialists are dedicated to overseeing every detail, and coordinating with technicians to ensure your installation is executed with care.

Certified for Passive House

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Residential Windows and Doors

Invest in Your Home’s Future

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