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INTUS Windows Joins Passive House Accelerator as a Champion Sponsor

By Jay Fox

Passive House Accelerator is excited to announce that INTUS Windows has become a Champion Sponsor! Founded in 2008 and headquartered in Lorton, Virginia, INTUS has grown rapidly and established itself as one of the largest suppliers of European-style uPVC windows in North America. INTUS has supplied windows for several landmark Passive House projects, particularly on the East Coast, including Sendero Verde in Manhattan, the largest residential Passive House project in the world; Park Avenue Green in the Bronx, formerly the largest Passive House certified building in North America; and the University of a Southern Maine’s Portland Commons residence hall, which houses 577 students.

INTUS has carved out a distinct niche in multifamily, institutional, and educational buildings, and they have a history of offering critical support to some of the first teams to work on large-scale Passive House projects. In addition to the Passive House milestones noted above, they supplied windows to the first Passive House-certified affordable senior housing development in the United States, the first Passive House church in the country, and one of the first certified schools in the US—Friend’s School of Portland.

Located in East Harlem, the 750,000-square-foot Sendero Verde is currently the largest fully affordable Passive House building in the world.
Located in East Harlem, the 750,000-square-foot Sendero Verde is currently the largest fully affordable Passive House building in the world.

INTUS windows use phthalate-free uPVC with no added plasticizers, resulting in frames that are stronger, more UV-resistant, and longer-lasting. Triple EPDM gaskets provide superior air and water tightness, while the triple-pane glazing delivers the thermal performance, interior comfort, and noise reduction that Passive House projects demand.

In addition to offering windows that can meet the rigorous demands of Passive House, the company’s depth of knowledge with respect to both Phius and PHI standards and in-house technical support can offer crucial support to teams, particularly with large-scale and complex projects. Their team includes drafters, engineers, project managers, and estimators who work directly with design teams to ensure that window specifications, detailing, and installation are coordinated from the earliest stages of a project. For developers and architects navigating the performance tolerances of a certified building, that kind of manufacturer-side collaboration can make the difference between a smooth delivery and a costly delay.

The Seventh-day Adventist Church in Kinderhook, New York, became the first Passive House-certified church in the country in 2017.
The Seventh-day Adventist Church in Kinderhook, New York, became the first Passive House-certified church in the country in 2017.

“We’ve been deeply invested in the high-performance building community for almost two decades, and we’re really excited to share what we’ve learned with the Accelerator community,” said Brand & Marketing Manager of INTUS Windows Rob Altman. “More than an opportunity to showcase our products, we’re hoping to help drive the Passive House movement forward and to help practitioners better understand the critical role that properly installed high-performance windows play in Passive House construction.”

“INTUS has been showing up on Passive House projects in New York City and across the East Coast for years, particularly on the multifamily and institutional side,” said Michael Ingui, the founder of Passive House Accelerator and President of Ingui Architects. “They understand the scale and complexity of those projects in a way that’s hard to find, and their dual certification gives teams real flexibility. We’re excited to bring them closer to the Accelerator community.”

Passive House Accelerator Director Zack Semke added, “Windows are arguably the most critical component in a Passive House. They’re where thermal performance, airtightness, and occupant comfort all converge. INTUS has proven that you can hit those targets at the scale of a large multifamily development or an institutional building without breaking the budget. That’s exactly what our community needs.”

To learn more about INTUS Windows and their product line, you can check out their page on the Accelerator site or visit intuswindows.com.

Published: April 15, 2026
Author: Jay Fox
Categories: Article, Fenestration, News