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 […]

8 Factors in Building Safe Double Stud Wall Cavities With Cellulose

On the Passive House in the Real World discussion board…
Expert instructor Mike Duclos discusses key factors to building double stud wall cavities (packed with Cellulose) safely

Student 1:
Hi Everyone, I’m excited to get started! I’m interested in looking into wall assembly details to compare and contrast the benefits of each. 
Mike Duclos:
In our area (MA) it is possible that […]

Leaders in High Performance Building: Best Green Energy Efficient Custom Home of 2015

At HeatSpring, we celebrate innovative builders and designers who work to improve the overall quality and performance of public and residential buildings…
Our Leaders in High Performance Building Giveaway was created for those who have helped plan, design, construct, and/or operate a high performance building. Entrants could submit a photo of their high performance project(s).* The photo could show the entire high performance building or […]

Two New Free Lectures on Healthier Homes and Buildings

Enroll in Two New Free Lectures on Healthier Homes and Buildings
Carbon Monoxide: What We Do Not Know Can Hurt Us’ and ‘Green, Healthy & Profitable Buildings and Homes’

In his free ‘Carbon Monoxide: What We Do Not Know Can Hurt Us’ lecture, Andy Wahl discusses the physical effects of carbon monoxide poisoning at both low and high levels, […]