Let's face it. Some ideas are just plain stupid. The photo below shows one of them. The product description† says, "Use to decoratively cover up A/C units..." Yes, they include heat pumps, too. What do you think will happen if…
You may not realize that among his many other accomplishments, Dr. Joseph Lstiburek, the well known building scientist and Canadian firebrand, invented the Turbo Thermo-Encabulator Max. He's tried to keep this secret and you won't find anything about it on…
In the world of building construction, improvement, and analysis, we talk about R-value all the time. Generally we talk about it as if it's a constant number. Hey, R-19 is stamped right there on the product, so that's what it…
One of the fundamental principles of building science is that buildings must be suited to their climate. When they're not, problems can ensue. Maybe it's just that they're not as efficient as they should be. Maybe it's worse. Put plastic…
I built a house out of structural insulated panels (SIPs) before I'd ever done—or even watched—a blower door test. It turned out to be pretty dang airtight, too, despite my lack of air sealing experience at the time. If I'd…
I was a kid a long, long time ago. Seems like it was another century...another millennium even. Wait a minute — it was another millennium! That was back in the day when we used to ride bicycles without helmets, apply…
On my trip to Aspen, Colorado last week, when I learned to ski, I noticed an interesting snow pattern on a lot of the roofs of the houses near where we stayed. Not being from snow country, I didn't know…
Did you know that if your state has adopted the 2009 International Energy Conservation Code (IECC), you cannot install an open wood-burning fireplace in a new home? It's true. According to the BCAP-OCEAN code status website, 30 states are on…
Martin Holladay, the Energy Nerd of Green Building Advisor, is in Atlanta this week to speak at the Greenprints conference put on by Southface Energy Institute. He asked if I could take him to see some homes in Georgia so…
Really, the argument about whether you should vent a crawl space in a humid climate is over. Advanced Energy's research project from 2002 proved that closed crawl spaces outperform vented crawl spaces. A quick look at the psychrometric chart shows…