Passive House

Passive House is an energy efficiency design and construction concept, and represents the highest energy efficiency standard for buildings in the world. The Passive House (or Passivhaus) standard was established in Germany in the mid-1990’s. Since then, over 30,000 housing units, as well as schools, office buildings, and factories have been built to the standard.

Houses built to the Passive House standard use up to 90% less energy for heating and cooling than the existing building stock. With strict requirements for heating load, cooling load, airtightness and overall energy use, Passive Houses are supremely comfortable, healthy, durable and energy efficient buildings.

Think Little owner, John Semmelhack, is a Certified Passive House Consultant (CPHC) and consulted on the first certified Passive House residence in Virginia, the Lankford Passive House. In addition, John is now a trainer the CPHC and PHIUS+ Rater training programs, as well as a member of the PHIUS (Passive House Institute U.S.) Technical Committee. Learn more at the Passive House Alliance and Passive House Institute U.S. websites or contact us to discuss your upcoming project.