Alpen High Performance Products is an American window and door manufacturer that designs and builds some of the most energy efficient window and door products in North America and the world.  Alpen’s core product offering draws on a 30-year history of industry leadership in advanced, high performance window and glass manufacturing and innovation. To carry this legacy forward, we continually improve our product offering by developing ongoing enhancements that are responsive to the needs of our customers.

We strive for open, honest dialogue with our core constituents and we are actively engaged in many sustainable, energy efficiency focused and healthy high performance building programs. We value calls-to-action from these communities to guide and inform our decision-making in product development and daily operations.

To achieve our mission as a company, we remain steadfastly focused on success in two key pillars of performance:


-Utilize technology that results in the highest thermal efficiency – think “warm to the touch on a cold winter night."

-Provide super-insulating products which dramatically reduce the amount of air volume which passes through the barrier.

-Embrace “directional tuning” as a design philosophy to allow customized performance optimization based on building architecture, use, orientation, climate and elevation.

-Construct products with high quality, durable materials which deliver comfort and performance in all seasons.

-Use non-toxic, non-offgassing materials wherever possible.


-Establish trustworthy relationships with customers through clear, thoughtful, unbiased communication and guidance throughout the selection and purchasing process.

-Deliver products on-time and on-budget.

-Provide an immaculate attention to detail which focuses on quality and craftsmanship throughout the manufacturing process.

Publish only third-party validated/certified performance data.

-Establish quality control programs that consistently surpass requirements set forth by these third party agencies.

-Integrate innovative and advanced technology into all our product offerings.

-Demand the same high quality standards from our suppliers as those to which we hold ourselves accountable.


Alpen works with a broad range of customers on projects both large and small, from single family houses to multi-million dollar estates, and in commercial buildings of all kinds, from McDonalds’ PlayPlaces to museums, university campuses and even the Empire State Building. Our products help designers and planners achieve success in meeting virtually any high performance building certification program, including Net Zero Energy, Passive House, LEED and Living Building Challenge certification programs.

Our professional sales staff is uniquely approachable, solution-oriented, and dedicated to a consultative sales process that considers a whole-system approach to better tailor solutions which meet individual needs. We strive to educate and inform our customers so that they are empowered with the tools they need to make effective choices. If the customer’s goals are focused on energy efficiency, comfort, smart building technology, sustainability or simply having beautiful high quality windows and doors in his or her home or project, we have the products and know-how to provide an effective and lasting solution.