Teaching the Way: the Shining Mountain Waldorf School Students Put Passive House to the Test

This is the story of a lucky, very timely coincidence. Back in February 2018, as part of our curriculum development for North American Passive House training, Emu Systems added a hands-on workshop to the  Certified Passive House Tradesperson course. After collecting feedback from participants in our 2018 Colorado and Montana courses, we upgraded 2019 workshop… Read More

Construction Moisture Management: Catch Up or Lawyer Up

Moisture in buildings has become increasingly worrisome for construction professionals in recent years. American buildings are subject to a wide variety of defects related to water in its different forms – liquid, vapor and sometimes snow and ice. These range from thermal discomfort, poor indoor air quality and health hazards (mold), all the way to… Read More

Beartooth Passive House nails Blower Door Test at 0.16-0.19 ACH50 on first try.

With U.S. building codes now starting to address air tightness with respect to energy efficiency, many builders find themselves struggling to meet the defined ACH50 values (air changes per hour at 50 Pascal) required by their local codes. This measurement is an assessment of air leaks as monitored via the pressurization of the whole building… Read More

Passive House Too Tight – Builder to Refund $5k in Damaged Testing Equipment

Notice: please read to the END of this article, and note the date. #thingswethoughtwedidnthavetoexplain 😉 Gally Tullagher, a builder in Red Lodge MT, was court ordered to refund $5k in damaged testing equipment to the company performing the blower door test — a procedure designed to measure air leaks in a building. “We set up… Read More

Passivhaus Trainer

We took part to the “Train the trainer” class, organised by the Passivhaus Institut of Darmstadt on the days following the 2016 edition of the International Passive House Conference.

The class is geared towards passive house experts, who intend to become teachers in the Certified Passive House Designer/Consultant class (CPHD/CPHC) and in the Certified Tradesperson class. Read More

20th International Passive House Conference in Darmstadt

About ten days ago, we took part to the 20th International Passive House Conference in Darmstadt, Germany.

Now at its 20th edition, this passive house-focused event brings together researchers, designers, experts and manufacturers from all around the world. Read More

Darmstadt calling

This week we are busy in Darmstadt, Germany: Enrico just presented at the 20th International Passive House Conference, and he’s currently taking his class to become a certified trainer with the International Passivhaus Institut.

Stay tuned for our articles on the Conference, and about our training programme in Italy and Colorado. Read More

The window as a “solar panel”: light transmittance and solar factor g

With this article, we cover two very important aspects of glazings: light transmission and the solar heat gain coefficient.

These parameters are extremely important for performing buildings and passive houses, however they are often overlooked by both designers and window manufacturers. Read More

The glass edge thermal bridge: the PSIg value

We continue our series of articles on thermal efficiency of windows, describing the glass edge thermal bridge.

As far as thermal bridges go, this one is inevitable, and it represents the weakest point of a well designed thermal envelope. It needs to be analyzed carefully, in order to prevent condensation (or ice) to form on the edge of the glass, discomfort, and an overall drop in the performance of the window/door. Read More