The Latest from the Energy Vanguard Blog
Some people love flex duct. Some people hate it. Some of us are OK with it if it's done right. As I've documented here numerous times, many flex duct installations leave a lot to be desired. They sag. They're kinked. They're twisted around pipes. If there's something bad that can be done with flex...
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If you want to build a superinsulated, airtight house, you run into some difficulties. How do you deal with the extra thickness of your walls and ceilings when you add all that extra insulation? What's the best way to ensure you hit your airtightness goal? And how do you do all that while keeping...
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Everyone knows about the impact of burning fossil fuels on global warming. Maybe not everyone believes it, but scientists first started focusing attention on increasing carbon dioxide levels way back in 1827. The impact of insulation on global warming, however, is relatively new. About a decade ago...
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At the North American Passive House Conference in Philadelphia in September, I gave a presentation on the global warming impact of insulation, an issue I've been discussing off and on since Alex Wilson wrote his paper on the topic back in 2010. In my presentation, I covered two different aspects of...
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There's big news this week. No, I'm not talking about the delayed opening of ski resorts out West because of the lack of snow. And, believe it or not, it has nothing at all to do with Donald Trump. I'm talking about Stephen Hawking's prediction that we humans have only a thousand years left here on...
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It's that time of year when heating systems start coming out of their summer hibernation. (Except maybe in Vermont. Michael Blasnik's Nest data showed that Vermonters are about the last to start heating their homes in Fall.) Then everyone starts looking for their lotion and lip balm. Gaps appear in...
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Supply and demand are two different things. When you think of an energy code, say the International Energy Conservation Code (IECC), you probably think of demand, not supply. Conserving energy, after all, means reducing demand. It's related to supply only indirectly. As a result, you might expect...
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You can go into just about any introductory physics classroom and you'll see that the students learn the same stuff no matter which school they attend. They study forces and motion, momentum and energy, electrostatics, and a host of other physics topics. They do lab experiments. They observe and...
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Lying in bed. Feel like I've run a world record mile. Can't...catch...my...breath. I take the deepest breath I can. The noisy air provides little sustenance for my oxygen-starved lungs.
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My website host (Hubspot) had a problem when I published my last article, High Humidity in a Spray Foam Attic, Part 2. If you wanted to comment and were not allowed, that problem has been fixed. I apologize for the inconvenience.
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