Alpen High Performance Windows

  • 4 Products
  • 1 Showcase

Passive House certified High performance window and doors to PHIUS and PHI


We manufacture Passive House Certified windows (both PHIUS and PHI) and glass and door solutions that meet the energy efficiency needs of a changing world, and improve the comfort and durability of the buildings in which we live and work. From our quality craftsmen who custom build each high performance product, to our collaborative, problem-solving customer solution experts, we strive to create an extraordinary and lasting customer experience.

Sustainability & ESG Rating

Alpen is focused on providing innovative solutions best suited to meet the varying needs of Passive House projects throughout North America. Alpen high performance windows are domestically manufactured with shorter lead times than other Passive House window options. Our windows are custom-built and available in a wide range of style and performance options.

  • High Performance
  • Superior Quality
  • Design Flexibility
  • PHIUS & PHI Certified and Approved