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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Climate Change and COVID Crisis Boost Interest in Ventilation

The Covid-19 crisis and climate change are boosting interest in ventilation and in training that helps people calculate the amount of ventilation needed in a home or building, says HeatSpring instructor Rick Karg.

Karg, who teaches  ASHRAE 62.2 Ventilation for Single Family Dwellings, says people are increasingly interested in ventilation because it helps reduce the spread […]

David J. Goldstein Awarded Genius Grant for Multifamily HVAC Solution

Please join us in congratulating David J. Goldstein, the first Genius Grant award recipient for 2021. David is an engineer and an entrepreneur. He has self-funded the development of a new HVAC solution that has potential to make multifamily housing more affordable while increasing occupant comfort and reducing CO2 emissions.

We learned of David’s work through […]

Storing Embodied Carbon in Buildings to Address Climate Change

More and more, green builders and architects are looking to reduce embodied carbon, and when possible, store it in buildings, says Marc Rosenbaum, instructor of HeatSpring’s Zero Net Energy Buildings course.

“We’re changing our view from net zero energy buildings to net zero carbon or even carbon positive buildings,” he says.

Embodied carbon data focuses on the […]

Hempcrete 101: A New Free Course

Here’s the story of “Hempcrete 101”, a new free course presented by Tom Rossmassler, Alex Sparrow, Bruce Friedman, and Jennifer Martin, offered in partnership with the Northeast Sustainable Energy Association.

In this presentation we will take a deep dive into the rich world of carbon-beneficial materials that are helping to lead our industry in responsible design […]

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 […]