Passive House


Passive House has been called the ‘ultimate energy efficiency standard for buildings,’ and is gaining popularity as more are in use.

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Comfortable, Resilient Net-Zero Buildings Aren’t Just Residential

Hampshire College’s R.W. Kern Center achieved zero net energy building status due to its passive solar orientation, high levels of insulation, airtight envelope and triple glazed windows. The building also includes air source heat pumps, and a 118-kW rooftop solar array capable of generating more than enough energy to meet the center’s needs on an […]

New Format for Deep Energy Retrofits by Marc Rosenbaum

We’ve just released a new version Marc Rosenbaum’s renowned Deep Energy Retrofits Course. Instead of a scheduled session which happens once a year, this course is now offered as a self-study on demand course which students can begin anytime.

We’ve replaced hand-graded assignments with quizzes and self-study work, which in turn made it possible for us […]

Grow Your Green Building Skillset Online — From Design to Retrofits

From building science to retrofits, energy modeling, smart homes, and beyond, HeatSpring offers a comprehensive marketplace of green building courses. Join your expert instructors for weeks of top notch technical training.

Deep Energy Retrofits – Upgrade existing residential and commercial buildings up to 45,000 square feet. From building assessment to heat and airflow calculations and beyond, you’ll […]

Zero Energy Homes: Economics, Efficiency & Renewable Energy Integration

What are Zero Energy Homes? How are they cost efficient and how do they help significantly lessen energy use?
In this $30 course, sustainable building expert Ann Edminster has the answers.

This course, designed as an introduction to all things Zero Net Energy, is perfect for energy consultants, homeowners, building analysts, sustainable builders and anyone curious about the power […]

The Impact of Air Tightness on Ventilation in Passive House Design

When many first hear of the Passive House blower door test requirement of 0.6 ACH at 50 Pascals of test pressure, the first thing that comes to mind is the difficulty of designing and executing air barrier details that deliver this. They may not stop to consider how this level of air tightness impacts the […]