Category Archives: Ventilate Right

PGH at Serenbe is 90% Tighter than Energy Code – Before Drywall!!

Before drywall was installed, I tested the infiltration (air leakage) at the Proud Green Home (PGH) at Serenbe, and the home achieved 0.72 ach50, or 0.055 ELR (more on these numbers in a minute). In other words, it’s really tight!!! The 2009 International Residential Energy Code (IECC), which is adopted in most states, requires an infiltration rate of […]

Read More

14 Design Don’ts for High Performance Homes, Part One

There are a lot of ways to design a home. Designing one for high performance, though, or even better-than-average performance, has many recommended best practices that are based on a lot of research of homes that have failed because they’re unhealthy, inefficient, and/or falling apart. This is why we have building scientists (see SOAP BOX […]

Read More

Improved Energy Codes, Diminishing Return, & a New Performance Baseline

It wasn’t long ago that the EPA’s ENERGY STAR New Homes Program created an uproar in the residential building community by releasing Version 3.0 of it’s volunteer 3rd party verification program. One of the biggest crack downs in the new version was it’s requirement for HVAC Contractors to test and verify their installations of the heating […]

Read More

Designing for High Performance: Slab-On-Grade, Part III – Controlling Air Flow

In an earlier post, I talked about 3 of the most important strategies for making a home energy efficient. They were; 1. Air sealing, 2. Air sealing and 3. Air sealing. Air sealed, or tight, homes do a better job at containing the conditioned air coming from the HVAC system where it belongs…inside. Tight homes […]

Read More

The 3 Most Important Strategies to Achieve an Energy Efficient Home

Your House Leaks. Period. It doesn’t matter if you’re living in a Passive House home or a grass hut. Your house leaks air both in and out through the many cracks in the walls, ceilings, floors, etc. In a Passive House the size and number of cracks are kept to a minimum. In a grass […]

Read More