Low Carbon Productions creates and publishes content about the latest developments and trends in building energy efficiency. We specialize in information about Passive House buildings.

Mary James is the editor and publisher at Low Carbon Productions. Her books include New York Passive House 2015; Net Zero Energy Buildings: Passive House + Renewables; Recreating the American Home: The Passive House Approach; and American Passive House Developments: Multifamily, Multi-Use, and Retrofit Buildings. For 10 years she was the editor and publisher of Home Energy magazine, which covers building science topics.

Tad Everhart is the marketing director and sole proprietor of Tad Everhart Energy Advisor LLC.


Leanne Maxwell is the art director.



For editorial and marketing inquiries, contact lowcarbonproductions@gmail.com.

Hudson Passive House, featured in   New York Passive House 2015  ; Photo by Peter Aaron/OTTO

Hudson Passive House, featured in New York Passive House 2015; Photo by Peter Aaron/OTTO

The Passive House approach to designing, constructing, and retrofitting buildings ushers in a means of predictably creating very energy-efficient buildings and sharply reducing carbon emissions from the building sector. Tens of thousands of Passive House buildings—homes, office buildings, laboratories, schools, and even entire city districts—have been constructed worldwide.

The term Passive House, or Passivhaus in German, derives from the fact that buildings constructed to this standard can be conditioned passively without much, if any, fossil fuel use. Contrary to the somewhat misleading label, Passive House buildings do not depend solely on passive solar energy to keep them comfortable, and they are not necessarily houses. Instead, the Passive House approach incorporates a thorough understanding of building physics that, when applied, creates superinsulated, very airtight buildings that require minimal energy use to heat, cool, dehumidify, and ventilate—while simultaneously delivering superior indoor air quality and year-round comfort.

The Passive House approach is practical and has been tested in the field in diverse climates, from Sweden to Chile. In North America the Passive House industry has been growing rapidly, with clusters of Passive House construction in Vancouver, New York, Seattle, Portland, San Francisco Bay Area, Mexico City, and many other municipalities.