Rod had a major duct failure going on in his crawl space. It was summertime when I visited and took the photos you see in this article, and the ducts had four serious problems that robbed his air conditioner of…
OK, so 2 years ago I wrote that I didn't need no stinkin' Building Science Summer Camp. I lied. Summer Camp doesn't stink at all. In fact, it's a really nice event where I learned a lot and got to…
One talk at the 2012 Building Science Summer Camp stood out above all the others. The last speaker on Tuesday was Henry Gifford. (Yes, that Henry Gifford!) When he was done, the majority of the audience stood and applauded. The…
Remember those old metal playground slides? You don't see them all that much anymore, but recently I found one. It was in the quaint little Southern town of Rutledge, Georgia, near the Hard Labor Creek Blueberry Farm where I'd been…
We went through a record-setting heat wave recently in the US. Here in Atlanta, we set an all-time record of 106° F. Homes with properly-sized air conditioners—yeah, yeah, I know they're few and far between—are sized for our design temperature…
I started writing the Energy Vanguard Blog in March 2010 and have published more than 350 articles since then. I love doing it. In fact, I probably love doing it a bit too much. Early on I often published 4…
Heating, ventilating, and air conditioning (HVAC) systems have undergone great development since our cavemen ancestors huddled around the fire in winter and fanned themselves with palmetto leaves in summer. The rapid development of efficiency and performance experienced by other industries,…
I was in one of the big box home improvement stores yesterday and thought I'd take a look at ceiling fans while I was there. Ten years ago when I was building a house and buying a bunch of ceiling…
Here's another rant that goes in my Drives Me Crazy category of articles. I'm in good company, too. Green Building Advisor ran an article this week about making the choice between an air-source heat pump and a ground-source (aka geothermal)…
Six years ago, RESNET published a major revision of the HERS Standards, called...wait for it: the 2006 National Mortgage Industry Home Energy Rating Systems Standards. One important new feature in the standards was the grading of insulation installation quality. Before…