The Latest from the Energy Vanguard Blog

net zero energy house serenbe proud green home imery
Posted by Allison Bailes on November 26, 2013
I spoke at Serenbe,† a beautiful green community southwest of Atlanta, this weekend and got a chance to visit a net zero energy home while there. Built by Luis Imery, one of the home energy raters we're a HERS provider for, the home has garnered quite a bit of recognition. In fact, they recently...
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Albert Einstein knew that planning ahead was the key to solving problems.
Posted by Allison Bailes on November 4, 2013
I get a lot of questions from people asking how they should go about fixing their homes. Sometimes it's specific (What's the best way to insulate my kneewalls?), and sometimes it's a hands up in the air, With all these problems, where do I start?  I'll focus on the latter today and let Albert...
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ventilation energy recovery ventilator erv electronic damper
Posted by Allison Bailes on October 9, 2013
If you're designing a ventilation system, first you have to determine how much air the house needs. You can use ASHRAE 62.2 or the new BSC-01 for that task. Then you have to decide what type of ventilation system to use: positive pressure, negative pressure, or balanced. In many green homes, the...
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million dollar home crappy hvac wall street journal
Posted by Allison Bailes on October 8, 2013
The fellow standing in the home he's having built is proud. It's his dream home in Brookline, Massachusetts after all. The Wall Street Journal last week published an article about affluent home buyers getting their own jumbo construction loans to do just as Mr. Deshpande has done. Usually, they...
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attic kneewall details air barrier insulation
Posted by Allison Bailes on October 7, 2013
We're working on a project, so we got a set of plans to get started. It includes the attic kneewall and vaulted ceiling section you see below.This is typical of plans that architects draw, and builders build houses this way all the time. Unfortunately, it contains several errors. Can you spot them?
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small simple home high electricity energy bills strip heat
Posted by Allison Bailes on September 27, 2013
She lives in a small, simple house in southern Mississippi. It's only 1700 square feet. Why then, she wondered, were her summer electricity bills running more than $600? She didn't have anything that could be a big energy hog, like a swimming pool, and she didn't do stupid things like leave all the...
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house all glass front windows repurpose inhabitat
Posted by Allison Bailes on September 5, 2013
I confess that, back in the '80s, I might have done the same thing this couple did. I remember reading Mother Earth News and Practical Homeowner magazine articles about folks who collected discarded materials to use in their existing homes or to build a new one. Take that man in Colorado, for...
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passive house conference joe lstiburek opening talk history
Posted by Allison Bailes on August 13, 2013
Last week, Joe Lstiburek gave the fifth annual twitterview† from his crawl space. (When he gets back from sailing this week, Peter Troast of Energy Circle has promised to publish the transcript.) One of the pearls of wisdom dispensed by Joe was that, "Passive House is the only place where real...
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crawl space duct system moisture mold nasty iaq
Posted by Allison Bailes on June 28, 2013
I've seen a lot of nasty crawl spaces. I've squirmed through their squalor and squeezed through their narrow confines. Possums, snakes, spiders, and camel crickets have kept me company in the dank, musty underworlds that so many people live above. Moldy joist fur (furry joist mold? joisty mold fur...
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facebook little girl dancing with art
Posted by Allison Bailes on January 31, 2013
I LOVE this photo! It has nothing to do with building science. Or does it? As we humans have progressed from living in caves to mud huts to stone buildings to the stick-built structures many of us in the US inhabit now, our lives have changed.
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