Going HERS Negative

With the completion of the solar PV array install, the HERS rating for the Good Energy Haus was amended and now shows a score of -8. Traditionally, we find that Passive House buildings do not rate at their actual performance due to some perceived short comings of the modeling protocol used to create a HERS rating. However, seeing this home go negative is an indicator that the general trajectory is now correct. Onward to Carbon-Neutrality.

Passive House Lecture at 2018 MN ASHRAE Spring Seminar

Tuesday, April 10, 2018 @ 9:30am

Radisson Hotel
2540 Cleveland Ave N, Saint Paul, MN 55113, United States

2018 Duluth Energy Design Conference

We are lecturing once again at this year’s Duluth Energy Design Conference & ExpoFebruary 19–21, 2018 at the Duluth Entertainment Convention Center (DECC). Click the link for a detailed agenda and session outline. 


  1. The American Dream Renewed—Passive House for Everyone
  2. Ultra-Efficient Housing—The Solution for a Sustainable Future
  3. EnerPHit—Retrofitting with Passive House Tools