Since 2010, INTUS Windows has been a pioneer in manufacturing and distributing extremely energy efficient windows and doors in the United States. At last count, we've installed over 800,000 windows and doors all over the world. Our windows have been essential components in the U.S.' first Passive House Certified church, the first LEED-Platinum mixed-use residential/retail building, Maine's first Passive House school, NY's largest Passive House co-housing project, and dozens of LEED, Passive House, and Energy Star Certified building projects.