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Passive house design3/25/2023 But the two standards are not mutually exclusive – a home could be a LEED-certified passive house. While other green building standards, like Leadership in Energy and Environmental Design (LEED), take into account many dimensions of a building like site selection, water efficiency and materials used, the passive house certification is more specific, focusing on energy use and building performance. It has really taken off because it makes building and retrofitting more cost-effective and practical.” “We’re all about reducing the carbon footprint of buildings, but we can’t make it complicated or expensive. “Our mission is to get more of these buildings built and retrofitted,” says Knezovich. Michael Ingui, partner at Baxt Ingui Architects. It’s a pretty wild approach to think that you could actually save the environment while having a better home.” The number of apartments or homes that PHIUS alone has certified, or is in the process of certifying, nearly tripled between 20, from 323 to 1,161, with even more projected in 2019. “The standard worked perfectly fine in a central European climate, but not so much in Louisiana or Minneapolis,” says Mike Knezovich, director of communications at the Passive House Institute US, one of the certification organizations. In the past few years, the number of projects in the US has grown significantly. But the design measures had to be modified to suit varying climates in other parts of the world. The passive house technique was developed more than 25 years ago in Germany. Triple pane windows keep heat in and cold out, but open the same as any window. These simple techniques seal the home up like a box by creating a protected barrier that prevents conditioned air from leaking out and irritants like dust, pollen, bugs and mice from getting in. In a passive house, the interior of a home is insulated, the wall seams and window frames are sealed, triple pane windows are installed and, in some buildings, a thick plastic shield is placed under the foundation. Ingui, who is currently working on nine passive home renovations in Brooklyn and Manhattan, says that by naturally heating the home and eliminating heating bills, the return on investment typically happens between two and five years. Done properly, the techniques can significantly reduce or possibly eliminate the need for a heating system, greatly reducing energy consumption. These design principles emphasize an airtight space inside the home, with continuous insulation and fresh air filters for indoor air quality. A passive house renovation involves continuous insulation, sealed walls and triple pane windows.
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