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

The Basics of Home Electrification

In 2020, 26% of U.S. households used electricity as the only source of energy (32.25 million out of 123.53 million homes), according to the U.S. Energy Information Administration.

With new incentives for electrification and renewable energy in the Inflation Reduction Act to help households save thousands of dollars in upfront costs, the trend of home and […]

Heat Pumps 101: How Does a Heat Pump Pull Heat From Cold Outdoor Air?

This is the fifth in a series of Heat Pump 101 videos from instructor and author, John Siegenthaler, P.E.. “Natural vs. Artificial Heat Transfer Processes” was the previous lesson in the series. You can enroll in John’s Heat Pump 101 course for free to learn the very basics of heat pumps in less than an […]

June 6th, 2023|Categories: Free Courses, Heat Pumps, HVAC Design, Hydronic Heating, Sustainable Building||

Heat Pumps 101: Three Modes of Heat Transfer

This is the third in a series of Heat Pump 101 videos from instructor and author, John Siegenthaler, P.E.. “Thermodynamic Basics” was the previous lesson in the series. You can enroll in John’s Heat Pump 101 course for free to learn the very basics of heat pumps in less than an hour.

The three modes of […]

May 23rd, 2023|Categories: Building Science, Free Courses, Heat Pumps, HVAC Design|Tags: |

Heat Pumps 101: Thermodynamic Basics

This is the second in a series of Heat Pump 101 videos from instructor and author, John Siegenthaler, P.E.. “The Difference Between Energy & Power” was the previous lesson in the series. You can enroll in John’s Heat Pump 101 course for free to learn the very basics of heat pumps in less than an […]

May 17th, 2023|Categories: Free Courses, Geothermal Heat Pumps, Heat Pumps, Hydronic Heating, Zero Net Energy Buildings||

New Free Webinar Announcement: Home Assessments for Decarbonization

Electrification of existing homes is a hot trend, and rightfully so with all the latest incentives for residences and businesses to transition to electric. Anyone working in the retrofit field is likely – sooner or later – to be asked to help a homeowner with this process. While it can be straightforward, more often it […]