Building Leak Detection and Measurement: Zone Pressure Diagnostics (ZPD)

Want complete building leak detection and measurement? Zone Pressure Diagnostics (ZPD) is one of the most powerful analysis tools available….
…and the calculation aid from Residential Energy Dynamics (RED) is the most accurate and easy to use ZPD tool available. This course addresses the ZPD basics to the advanced features. Learn about non-modifiable and modifiable zone analysis, […]

Home Energy Audits: The 411

What are home energy audits, and how much do they usually cost? A variety of approaches, price points and follow-up actions may be chosen. Here is an overview of what to expect when choosing the right audit for your needs.

This article was originally published on GreenHomeGuide.com on June 23, 2016 and was republished with permission.
1) How much does […]

Heat Recovery Ventilation Considerations in Zero Net Energy Homes

Marc Rosenbaum discusses heat recovery ventilation considerations for zero net energy homes on the Zero Net Energy Homes course discussion board…
Exhaust-only ventilation home health concerns
Student 1: Do you know of any potential health impacts from living in a depressurized space– such as a home with exhaust-only ventilation?

Marc: You can pull in pollutants from outdoors or the ground (radon), […]

HVAC Engineering: Chilled Floors + Humidity

On the Integrated HVAC Engineering discussion board, expert Robert Bean answers questions about chilled floors and humidity considerations and air mixing…
Student 1:  
Chilled floors seems like a great idea, and if you’re going to do a radiant system, you might as well consider cooling and heating.

The humidity, however, seems to be a big concern. Vapor barriers […]

Air, Thermal, Vapor & Water Control Layers in Wall Assembly

On the Mastering Building Science discussion board…
Allison A. Bailes III, Ph.D. answers student questions about air, thermal, vapor and water control layers in wall assembly.

Student 1: 
I’m going to repeat what’s been said about the control layers in my own words, and ask a few questions for clarity:

There’s rain control, air control, vapor control, and thermal control. […]