Green Building


Zero net energy, geothermal heat pumps, hydronics, building science, HVAC engineering, high efficiency boiler systems, passive house. We write regularly on technical issues related to green buildings and offer some amazing free tools to help you stay in the loop.

Building Science, Zero Net Energy, Passive House

Mike Duclos’s Passive VS Conventional Floor Planing + Sample Passive House Design (PDF)

Hydronics, Boilers, and Environmental Quality & HVAC Engineering

Free Course: How to Design & Sell Mod-Con Boilers with Roy Collver
Free Course: Achieving Hydraulic Separation in Hydronic Systems with John Siegenthaler
Free Course: Integrating ASHRAE HVAC Standards with Robert Bean
Free Course: Mastering the Outdoor Reset Curve with Dave Yates

Renewable Thermal: Geothermal Heat Pumps & Biomass

Free Course: Temperature Stacking in Thermal Storage for Biomass Heating Systems with John Siegenthaler

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 […]

To Electrify or Not To Electrify? – a new free course

Should we be trying to electrify everything? To help answer that question, we’re excited to present, “To Electrify or Not To Electrify?” a new free course taught by Robb Aldrich and Nicole Ceci from Steven Winter Associates. Their presentation is offered in partnership with the Northeast Sustainable Energy Association.

About the Course

Should we be trying to electrify […]

Air-to-Water Heat Pump & Ventilation Retrofit: A New Free Course

Here’s the story of “Finally Fossil-Fuel Free: Air-to-Water Heat Pump & Ventilation Retrofit”, a new free course presented by Brian Just from the Vermont Energy Investment Corporation. His presentation is offered in partnership with the Northeast Sustainable Energy Association.

Air-to-water heat pumps have generated a lot of excitement for their enormous retrofit potential. This case study […]

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 […]

Scalable (Near-Zero Energy) Multifamily Retrofits: A Case Study

Here’s the backstory on “Scalable Multifamily Retrofits”, a new free course presented by Chris Benedict, Margo Valdes, and Ian Shapiro, offered in partnership with the Northeast Sustainable Energy Association.

Energiesprong and practitioners selected by RetrofitNY are developing standardized and scalable methods to achieve whole-building near-zero energy retrofits while maintaining multifamily tenants in place. Energiesprong, based in […]