The Latest from the Energy Vanguard Blog

Your air conditioner is more efficient in fall and spring
Posted by Allison Bailes on September 20, 2017
It's cooled off a bit here in Atlanta. A couple of weeks ago we even had temperatures down in the low 50s Fahrenheit. Ah, that felt nice, especially since I've been running again this year.1 With the fall equinox two days away, we should start seeing more of those nice cool days. We're back up...
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Can you get condensation on a sponge?
Posted by Allison Bailes on September 7, 2017
Last week I taught a class called What the Duct!? at the Builders' Boot Camp in Virginia. Paul Francisco was one of the other instructors (teaching about indoor air quality), and on the last evening at dinner, our conversation turned to building science. (Imagine that!) I don't recall exactly how...
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Moisture problems at the air conditioning diffusers in a trendy restaurant
Posted by Allison Bailes on August 25, 2017
I've got the curse, you know. I can't walk into a building and not check out what's going on with ductwork, windows, and anything else that lets me apply what I know about building science. Yesterday, I went to lunch at a trendy restaurant near Emory University and of course looked up at the...
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To understand heat, air, and moisture flows in buildings, think materials, assemblies, and enclosure.
Posted by Allison Bailes on August 17, 2017
When you approach the subject of building science, especially as it regards heat, air, and moisture flows through the building enclosure, it's easy to get confused. There's a lot to learn: blower door testing, insulation grading, R-value, permeance, radiant barriers, combustion safety, solar heat...
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Al Gore's Tennessee home got an energy retrofit in 2007
Posted by Allison Bailes on August 15, 2017
Al Gore is in the news again. His new climate change movie, An Inconvenient Sequel: Truth to Power, is in theaters now. And that means the folks who don't believe in climate change — or at least that humans have any impact on it — are out in force trying to discredit the message. As was the case 10...
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Builders' Boot Camp in Christiansburg, VA, 30-31 August 2017
Posted by Allison Bailes on August 9, 2017
Now that Summer Camp is over, I'm excited about Boot Camp. That would be the Builders' Boot Camp that Community Housing Partners (CHP) puts on each year. It's being held on 30-31 August. I haven't been part of it before, but this year I'm teaching a half-day class four times over the two day affair...
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Flex duct presentation intro, 2017 Buildng Science Summer Camp
Posted by Allison Bailes on August 8, 2017
One week ago I spoke at the Westford Symposium on Building Science. You may know it better as Building Science Summer Camp, since that's what everyone calls it. I wrote up a little summary of the whole conference last week but didn't say a lot about my presentation. Today I'll fill you in on what...
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raised heel truss, photo by APA - The Engineered Wood Association
Posted by Allison Bailes on August 7, 2017
A comfortable, energy efficient home begins with a good building enclosure. That means control layers. You've got to control the flows of moisture, air, and heat. Today, let's talk about controlling heat and further, let's focus on heat going through the top of the house. If you've read my Flat or...
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Dr. Claudette Reichel speaking at Building Science Summer Camp 2017 (photo by Neil Randol)
Posted by Allison Bailes on August 4, 2017
Well, another Building Science Summer Camp has come and gone. If you've been reading this blog for a while, you probably know about it. You may even know that I have a special history with it. Dr. Joseph Lstiburek and Betsy Pettit, his wife and business partner, (shown below) host it each year at...
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Onboarding training for Florida's new certified rating program
Posted by Allison Bailes on July 14, 2017
Last month I told you about the new certified rating and code compliance program that's launching in Florida. I mentioned there will be a training for it at the Southeast Building Conference (SEBC) in Orlando this month. And now I have the details. If this is something you might be interested in,...
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