PHIUS Posts Certified Window Data

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The Passive House Institute, US (PHIUS) Certified Data for Windows program has officially launched its new online searchable database including listings of certified, PHPP-ready performance data for Alpen high performance fiberglass windows and several other North American and European window products. expertly covered the PHIUS announcement in this April 7, 2014 article.

Program organizer Graham Wright provided this March 28 interview to further clarify PHIUS Certification program goals and address any confusion regarding differences between it and window certification programs by Passive House International (PHI), and others.

Alpen HPP is proud to be an early adopter of the program, becoming the first window manufacturer in North America to have products certified, and seeks additional product certifications in the coming months. Performance data for Alpen windows that already have been PHIUS certified can be found both on the PHIUS website and on Alpen’s Passive House page.

Staying at the forefront of the Passive House performance movement, Alpen’s technical sales team is actively researching and listening to leaders in the industry to learn and compile helpful tools for designers and homeowners to use in their window selection process.  A new white paper co-written by RDH Engineers addressing differences among PHIUS, PHI, NFRC and other simulation programs was presented at this year’s Passive House Northwest conference, stay tuned to Alpen’s News Post website for a link to the final article, expected to be published in full this spring.

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Alpen windows in Honda Smart Home US

Alpen windows play integral role in net-zero energy performance of Honda Smart Home in Davis, California. A new video series on the Honda Home website explains how the home’s heating, cooling and electrical systems are automatically controlled to achieve net-zero energy performance.

Designers recognized that before equipping the home with renewable energy solar panels, the building envelope must be well-insulating and air-tight, so they selected Alpen high performance fiberglass windows:

“The Honda Smart Home’s south-facing windows are optimized for heating and cooling, while the north-facing windows are positioned to maximize natural light and ventilation. This will keep the home naturally cool in the summer and warm in the winter. Double stud walls, cool roofing material and a fully insulated concrete slab all contribute to the home’s energy efficiency.”

Alpen’s casement windows were also retrofitted with motorized operators so that the windows will automatically open and close to provide ventilation and cooling when the home needs it most.

Other articles announcing the completion of this precedent-setting home can be found here:

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Visit Alpen HPP at the 2014 Passive House Northwest Conference on March 28

Alison Ray from Alpen’s Colorado headquarters will be joined by two expert distributors from Oregon and Montana to showcase Alpen high performance fiberglass window products at the Passive House Northwest Conference in Portland, Oregon on March 28.

Come visit us to learn more about Alpen products and view samples of all of our products including samples of the 525-S Series, the newest addition to our super-insulating energy efficient window lineup.

For conference information and registration, please visit:

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Brookfield Passive House Featured in Builder Magazine

The Brookfield Passive House, built by Midtown Residential, continues to receive media attention.  Most recently, the home was featured in the February 2014 edition of Builder Magazine. A well-written article highlighting key features and attributes of Colorado’s first Passive House certified by Passive House Institute US, and the first certified Passive House in the nation built by a production home builder.  The article can be viewed online at: and is accompanied by a beautifully orchestrated professional photograph slideshow.

The Brookfield Passive House used Alpen’s 925 Series twin-film/quad-cavity fiberglass windows with directionally-tuned high and low solar heat gain glazing.  Boasting an impressive U-0.08 center-of-glass thermal performance, 925 Series windows insulate the building envelope and provide critical solar heat gain on the south elevation to offset the home’s energy needs.


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Alpen Windows in Kansas City “Best Green Home” of 2014

Kansas City Home and Garden Magazine “Best Green Home” 2014

Alpen’s high performance fiberglass windows play a key role in insulating and heating the Kansas City home recently awarded the prestigious title of “Best Green Home” in the 2014 edition of the Kansas City Homes and Gardens Magazine.

Read the full magazine article online here, starting on page 31:



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Alpen Applauds Smith College’s Outstanding Living Building Achievement

BEC_exterior_duskThe February 2014 announcement of Smith College’s Bechtel Environmental Classroom being awarded Living Building Certification makes this beautiful structure the first in New England and the fifth in the world to be Living Building Challenge certified.


For Alpen HPP, the Bechtel Environmental classroom is the first building to be officially Living Building certified with Alpen’s high performance fiberglass windows, and it is the second building to be Living Building certified with Alpen’s advanced suspended coated film insulating glass.

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The Packard Foundation Headquarters completed in 2012 served as Alpen’s first official Living Building project.  These two projects are among several Alpen glass and window projects slated for Living Building Certification in the next few years.

Alpen HPP’s high performance 725 Series fiberglass windows were selected for the Bechtel Environmental classroom because of their low embodiment of environmentally harmful materials, or “Red List” components, and their advanced thermal performance.

Alpen applauds Amherst-based Coldham & Hartman Architects for having artfully integrated hallmarks of the Smith College identity into the building’s design and construction.  With the college’s pristine pastoral campus landscape serving as a perfect canvas and a deeply committed student body in environmental and sustainability programs, the building’s achievement of Living Building Challenge standards seems to rise from the heart of Smith College itself.

The Bechtel Environmental Classroom was featured in this January/February 2014 edition of Solar Today (article starts on page 22).






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Northland’s News Center special report features Alpen windows for efficiency, comfort

As record temperature lows chill homeowners nationwide, Northland’s News Center investigates how one Wisconsin couple is using Alpen windows and SIPS walls to construct their new home to be more energy efficient and comfortable than ever before. This 90-second news clip simply and elegantly explains fundamental aspects of high performance home construction and Alpen windows.

Alpen’s experienced Wisconsin-based distributor, Randy Nilsson, who is contractor on this project and featured in the video reports:

“The homeowners are very enthusiastic about our windows and the high-performance homes that we build. With the brutally cold temps and recent spike in propane folks are showing a higher level of interest in what we offer.

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Better-Performing Windows Lead to Better-Performing People .

Alpen’s high performance fiberglass windows make for some high functioning and comfortable people. See the attached article from the NFRC to learn more.



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See live construction camera of Alpen windows and glass installed at CSU’s Leed-Platinum Powerhouse Building

Alpen windows and glass were installed last fall at the Colorado State University Powerhouse Energy Campus – a 65,000 square foot LEED Platinum addition will achieve 48% in energy use through a portfolio of efficiency upgrades. Substantial building envelope improvements included use of Alpen glass and Alpen 525 Series Fiberglass windows in the first-ever all-fiberglass curtainwall system by Graham.

Check back soon for updates on project completion, and in the meantime you can see real-time construction progress through the live camera feed here:

CSU Leed Platinum Powerhouse Building
Read more about this project here:

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Download Alpen’s Presentations from the Passive House Institute US National Conference

PHIUS Conference Presentation - Alpen HPPAlpen Founder, Robert Clarke, and technical sales representative, Alison Ray, were invited to present at the Passive House Institute US National Conference during a break-out session entitled “Quality North American Window and Door Innovations”.

View their presentations using the links below or visit our Passive House Resources page to download editable, full-resolution PowerPoint files.

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